Sleeplean hit the supplement market claiming to boost resting metabolic rate while improving deep-sleep quality. Our editors spent 30 nights evaluating the science, the ingredient panel, and real-world results. Below is the full breakdown—with lab notes, tester outcomes, and how the formula stacks up against other night-time metabolism aids.
Non-habit-forming • cGMP-certified facility
Why Nighttime Is Prime Time for Fat Storage
Late-evening cortisol spikes and reduced metabolic rate make it easy for the body to store calories while you sleep. Peer-reviewed data from Stanford (2023) shows resting metabolism can drop by up to 15% overnight.
How Sleeplean Targets Nighttime Metabolism
- Glycine + L-Theanine — help transition into slow-wave sleep faster.
- Ashwagandha KSM-66® — clinically shown to lower evening cortisol.
- Magnesium Bisglycinate — supports healthy insulin sensitivity overnight.
- Decaf Green-Tea EGCG — maintains thermogenesis without stimulants.
30-Night Test Panel Results
| Tester | Start (lbs) | Day 30 | Sleep Score Δ |
|---|---|---|---|
| Amy (46) | 178 | 173 (-5) | +18% |
| Carlos (38) | 212 | 205 (-7) | +22% |
| Jen (51) | 164 | 160 (-4) | +16% |
Individual results vary; testers followed an identical bedtime routine. ← Scroll table horizontally to view all columns
Small internal pilot; individual outcomes are not guaranteed."Sleeplean's ingredient profile aligns with current data on late-night thermogenesis. It's stimulant-free, which is critical for preserving deep sleep."
— Jane Taylor, RDN · Independent Nutrition Researcher
Ready to Try Sleeplean?
cGMP-certified facility • Non-habit-forming formula
Get Sleeplean →These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Frequently Asked Questions
No, it's stimulant-free and formulated for overnight use.
All ingredients are non-habit-forming botanicals or amino acids.
Most testers noticed sleep improvements within one week, fat-loss trends by week 4.
We don't recommend stacking sleep aids; consult your doctor.
Sleeplean is backed by the manufacturer's standard return policy.
Want to compare Sleeplean with other nighttime supplements?
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