Why is sleep harder? For many people, it is not one thing. It is several small changes that stack up at the same time: shifting hormones, a slower caffeine clearance, a body temperature that runs warmer at night, more evening screen light, and a nervous system that stays on alert after a full day. None of these is a disease. Each one nudges sleep a little lighter and a little shorter. The good news is that most of them respond to steady habits, and a few respond to well-chosen nutrients such as magnesium.
Why is sleep harder for adults?
Sleep is built in stages. Deep sleep happens mostly in the first half of the night, and the lighter, dream-rich stages come later. As people get older, the deep-sleep portion tends to shrink and the night becomes easier to interrupt. The National Institute on Aging notes that as people age, sleep tends to be shorter and lighter, and they may wake up more often during the night.
Several drivers show up again and again with age:
- Hormone shifts. In the years around perimenopause, estrogen and progesterone levels rise and fall less predictably. Progesterone in particular has a calming effect, so lower or uneven levels can make it harder to settle. The Office on Women's Health lists sleep problems among the symptoms that can begin in perimenopause.
- Night-time warmth. Your core temperature needs to drop for sleep to start. Hot flashes and night sweats, or simply a bedroom that runs warm, work against that drop.
- Caffeine that lingers. A controlled study published in the Journal of Clinical Sleep Medicine found that a 400 mg dose of caffeine taken even six hours before bed measurably cut total sleep time.
- A busy, wired brain. Cortisol is meant to be low at night; a mind still solving problems at 11 p.m. keeps it higher than it should be.
- Nutrient gaps. Magnesium intake falls short for many adults in the U.S., according to the NIH Office of Dietary Supplements. Magnesium is involved in nerve signaling and muscle relaxation, both of which matter for winding down.
Put those together and you have the classic pattern: falling asleep is fine, but you wake at 3 a.m. and cannot get back down.
What is the difference between falling asleep and staying asleep?
It helps to name which problem you actually have, because the fixes differ.
| Pattern | What it usually points to | First thing to try |
|---|---|---|
| Lying awake a long time at bedtime | An alert nervous system, late light, late caffeine | A fixed wind-down hour with dim light and no screens |
| Waking at 2–4 a.m. | Temperature, hormone shifts, alcohol, a full bladder | A cooler room, no alcohol close to bedtime, less fluid late |
| Waking too early and feeling unrested | Less deep sleep, a body clock drifting earlier | Bright light in the morning and a consistent wake time |
| Sleeping enough but waking tired | Fragmented sleep, snoring, or a partner who moves | Talk with your doctor; a sleep study may be worth it |
If snoring, gasping, or heavy daytime sleepiness is part of the picture, please talk with your healthcare provider. Those are not things a supplement or a habit should be asked to handle.
What habits help most with sleep?
The boring answers work best, and they work better together than alone. Here is the order we would start in:
- Keep one wake time, every day. Your body clock takes its cue from when you get up, not when you go to bed. A steady wake time, weekends included, is a strong place to start.
- Get daylight early. Time outside in the morning sets the clock for the whole day and makes melatonin rise on time that night.
- Move your last caffeine earlier. Based on the six-hour finding above, a 1 p.m. cutoff is a sensible starting point for a 10 p.m. bedtime. If you still wake at 3 a.m., try noon.
- Cool the room. Most people sleep better when the bedroom is cool.
- Dim the house an hour before bed. Lamps instead of overhead lights, and phones face-down. Bright light late in the evening pushes your body clock later.
- Skip the nightcap. Alcohol makes falling asleep easier and staying asleep harder.
If you want a step-by-step version of this, our Wind-Down Ritual guide lays out a full evening routine.
Which nutrients support sleep?
Supplements do not replace the habits above, but a few nutrients have a real role in how the body winds down. We keep the claims modest, because that is what the evidence supports.
Magnesium
The NIH Office of Dietary Supplements notes that magnesium is a cofactor in more than 300 enzyme systems, including those that regulate muscle and nerve function, and that many people in the United States take in less than the recommended amounts from food. A small 2012 randomized, placebo-controlled trial in the Journal of Research in Medical Sciences gave 46 adults aged 60 to 75 with insomnia and low magnesium intake 500 mg of magnesium a day (as magnesium oxide) for 8 weeks, and found improvements in several sleep measures, mostly self-reported, compared with placebo. That trial dose is above the 350 mg daily upper limit for supplemental magnesium that the NIH Office of Dietary Supplements lists, and higher than the 275 mg in Magnesium Glycinate+.
The form matters for comfort. Magnesium glycinate is magnesium bound to the amino acid glycine. It is gentle on the stomach, which is why many people choose it for evening use. Our Magnesium Glycinate+ delivers 275 mg of magnesium per three-capsule serving, from 2,500 mg of magnesium glycinate, with the amount printed on the label. The label directs three capsules once daily before a meal and carries this caution: Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement. If you want to understand the form choice in more depth, see Magnesium Glycinate vs. Citrate: Which One Actually Helps You Sleep?
The NIH Office of Dietary Supplements lists an upper limit of 350 mg a day for adults for magnesium from supplements and medicines; magnesium in food does not count toward it. Magnesium Glycinate+ gives 275 mg, so add up any other magnesium you take, such as an antacid or laxative, a multivitamin or Deep Calm+™ (25 mg). The same fact sheet notes that magnesium can interact with oral bisphosphonates (osteoporosis medicines), tetracycline and quinolone antibiotics, diuretics and proton pump inhibitors, and that the risk of too much magnesium is higher when the kidneys do not work well. If any of these apply to you, talk with your healthcare provider first.
5-HTP
5-HTP is a building block the body uses to make serotonin, which is then converted into melatonin, the natural sleep signal. It is traditionally used to support a balanced mood and a calmer evening. Our 5-HTP+ provides 200 mg of 5-HTP from Griffonia simplicifolia seed per two-capsule serving. The label directs two capsules once a day, 20 to 30 minutes before a meal with an 8 oz. glass of water. One important caution: if you take antidepressants (SSRIs or SNRIs) or any other serotonergic or mood medication, or if you are pregnant or nursing, talk with your healthcare provider before using 5-HTP. And do not combine 5-HTP+ with another 5-HTP product such as Deep Calm+ at the same time. Deep Calm+ also contains St. John’s Wort and ashwagandha, so check with a doctor or pharmacist first if you take any prescription medication (especially antidepressants), and do not combine it with 5-HTP+ or Ashwagandha+. The 5-HTP+ and Deep Calm+ labels carry the same caution as Magnesium Glycinate+: Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement. For a side-by-side look, read 5-HTP vs. Melatonin: How They Differ and Which Fits Your Routine.
Melatonin
Melatonin is a hormone, not a nutrient. The NCCIH notes that melatonin supplements may help with jet lag and appear to help with sleep in people with delayed sleep-wake phase disorder, although it is uncertain whether the benefits outweigh the possible harms. NCCIH also notes that practice guidelines found not enough strong evidence on the effectiveness or safety of melatonin for chronic insomnia, and that melatonin may stay active longer in older people than in younger people and cause daytime drowsiness. We cover doses and cautions in Melatonin and Sleep: How Much, When, and Cautions.
Why does supplement quality matter?
If you take any medication, the last thing you need is a bottle that does not contain what the label says. Underdosed products and labels that do not match what is in the bottle are common in the supplement aisle.
This is why we lead with quality rather than tuck it into the fine print. Every batch of our supplements is third-party tested by an outside lab for purity and potency. Magnesium Glycinate+, 5-HTP+ and Deep Calm+ are manufactured in the USA with globally sourced materials, in an NSF-certified, GMP-certified, FDA-registered facility. Every active ingredient is named on the label; where a formula uses a blend, the blend total is shown, but the amounts inside each blend are not. Our formulas are clean by design and backed by a 60-day guarantee. You can read exactly what we test and why on Our Standards, and if you have never read a lab report before, our short guide on how to read a Certificate of Analysis shows what to look for.
A simple evening plan to start this week
You do not need to do everything at once. Pick this sequence and hold it steadily before you judge it:
- Morning: same wake time, daylight early, last coffee by early afternoon.
- Dinner: take three capsules of Magnesium Glycinate+ before the meal, as the label directs, and do not exceed the recommended dose; finish eating well before bed; skip alcohol on weeknights.
- One hour before bed: lamps on, overheads off, phone on the charger in another room.
- Bedroom: cool, dark, and quiet. A fan does double duty for both.
- If you wake at 3 a.m.: do not check the clock. Breathe slowly, keep the lights off, and let the night be boring.
Sleep can be good sleep. It just asks for a little more structure.
Frequently asked questions about sleep
Why do I wake up at 3 a.m. every night?
The early-morning hours are when deep sleep has mostly finished and sleep is lightest, so anything that stirs you, warmth, a hormone shift, alcohol wearing off, or a full bladder, is more likely to wake you fully. A cooler room, no alcohol close to bed, and less fluid late in the evening are the usual first fixes.
How much sleep do people actually need?
The National Institute on Aging says older adults need about the same amount of sleep as all adults: seven to nine hours each night. What changes is that the night tends to get lighter and more easily interrupted, so you may wake more often.
Does magnesium help you sleep?
Magnesium supports normal nerve and muscle function. One small trial in adults aged 60 to 75 with insomnia and low magnesium intake, using 500 mg of magnesium a day (as magnesium oxide) for 8 weeks, found improvements in several sleep measures compared with placebo; that dose is above the 350 mg daily upper limit the NIH Office of Dietary Supplements lists for magnesium from supplements and medicines. It is best thought of as support for winding down, not a sleep aid that knocks you out. Magnesium glycinate is a gentle form that many people choose for evening use.
Is it safe to take magnesium and 5-HTP together?
Many people use them together in an evening routine. Follow each label: Magnesium Glycinate+ is three capsules once daily before a meal; 5-HTP+ is two capsules once a day, 20 to 30 minutes before a meal with an 8 oz. glass of water. Both labels say: Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement. For 5-HTP, if you take any antidepressant or other serotonergic medication, or are pregnant or nursing, talk with your healthcare provider first, and never take two 5-HTP products at once. For magnesium, the NIH Office of Dietary Supplements lists an upper limit of 350 mg a day from supplements and medicines, notes interactions with some osteoporosis medicines, antibiotics, diuretics and acid reducers, and says the risk of too much magnesium is higher when the kidneys do not work well.
When should I see a doctor about sleep problems?
If you snore loudly, wake gasping, feel very sleepy in the daytime, or keep sleeping poorly despite good habits, make an appointment. Those patterns deserve a proper evaluation rather than another supplement.
Related reading from our Wellness Hub
- The Wind-Down Ritual: How to Build an Evening Routine for Deeper Sleep
- Magnesium Glycinate vs. Citrate: Which One Actually Helps You Sleep?
- Best Time to Take Magnesium Glycinate: A Simple Evening Routine
- 5-HTP vs. Melatonin: How They Differ and Which Fits Your Routine
Sources
- National Institute on Aging — Sleep and Older Adults, reviewed February 6, 2025
- Office on Women's Health — Menopause symptoms and relief, last updated October 19, 2026
- Drake C, et al. Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed. J Clin Sleep Med. 2013 (PubMed)
- NIH Office of Dietary Supplements — Magnesium: Health Professional Fact Sheet, updated January 6, 2026
- Abbasi B, et al. The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial. J Res Med Sci. 2012 (PubMed)
- NCCIH — Melatonin: What You Need To Know, last updated May 2024
Individual results vary.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
