The Science of Sleep & Recovery
How Thirdzy Works for Rest & Recovery
The only sleep supplement that helps you sleep deeper AND wake up stronger.
How Thirdzy Works for
Rest & Recovery
The only sleep supplement that calms your nervous system and fuels overnight physical recovery—so you don’t just sleep deeper, you wake up stronger.
Thirdzy is more than a sleep aid.
It fuels recovery at every level: muscles, joints, nervous system, and hormones.
✅ Muscles rebuild stronger
✅ Joints repair from wear
✅ Stress hormones drop
✅ Muscles rebuild stronger
✅ Joints repair from wear
✅ Stress hormones drop
The Foundation of Fitness
Sleep is the most powerful legal performance enhancer, yet most athletes fail to optimize their sleep cycles for maximum recovery and adaptation.
Why You Shouldn’t Rely on Melatonin for Peak Fitness
Why You Shouldn’t
Rely on Melatonin for
Peak Fitness
Melatonin is not for athletes. It can leave you groggy, cause dependency and interfere with how your body recovers.
What Peak Rest & Recovery Looks Like
The best sleep follows a predictable rhythm—with long cycles, minimal disruptions, and fast HRV recovery.
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Long Segments of Deep Sleep
Magnesium, glycine, and GABA have been shown to increase slow-wave sleep
IMPACTS ON YOUR BODY:- Better Muscle & Joint Repair
- Growth Hormone Release
- Better Stress Resilience
Long Segments of Deep Sleep
Magnesium, glycine, and GABA have been shown to increase slow-wave sleep
IMPACTS ON YOUR BODY:- Better Muscle & Joint Repair
- Growth Hormone Release
- Better Stress Resilience
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Frequent Mirco-Awakenings
Often caused by stress, low magnesium, or sedative rebound
IMPACTS ON YOUR BODY:- Impaired Muscle Recovery
- Elevated Cortisol
- Flatlined Fitness & Higher Injury Risk
Frequent Mirco-Awakenings
Often caused by stress, low magnesium, or sedative rebound
IMPACTS ON YOUR BODY:- Impaired Muscle Recovery
- Elevated Cortisol
- Flatlined Fitness & Higher Injury Risk
Thirdzy’s non‑melatonin formula helps you stay asleep long enough to complete full restorative cycles—no next‑day grogginess.
Science-Backed Ingredients to Improve Your Fitness
Each natural ingredient is clinically supported and optimized for sleep quality, physical recovery, and performance—without hormones or sedatives.
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Magnesium Bisglycinate
250mg per serving
Supporting Research 1 ,2 ,3 ,4A highly absorbable, calming form of magnesium that reduces nighttime cortisol, deepens sleep, and supports stress recovery after training.
→Shown to increase delta wave activity and improve sleep architectureSupporting ResearchA highly absorbable, calming form of magnesium that reduces nighttime cortisol, deepens sleep, and supports stress recovery after training.
→Shown to increase delta wave activity and improve sleep architecture
Magnesium Bisglycinate
250mg per serving
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Hydrolyzed Collagen
10g per serving
Supporting Research 1 ,2 ,3 ,4Fast-absorbing peptides deliver amino acids for overnight muscle and joint repair. High glycine content supports growth hormone release and deeper sleep.
→Shown to increase strength gains by 82% in training studiesSupporting ResearchFast-absorbing peptides deliver amino acids for overnight muscle and joint repair. High glycine content supports growth hormone release and deeper sleep.
→Shown to increase strength gains by 82% in training studies
Hydrolyzed Collagen
10g per serving
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L-Theanine
200mg per serving
Supporting Research 1 ,2 ,3Promotes alpha brain waves to ease the transition into sleep. Reduces cortisol under stress and improves REM duration and quality.
→Shown to improve stress response and support REM sleepSupporting ResearchPromotes alpha brain waves to ease the transition into sleep. Reduces cortisol under stress and improves REM duration and quality.
→Shown to improve stress response and support REM sleep
L-Theanine
200mg per serving
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GABA
300mg per serving
Supporting Research 1 ,2 ,3 ,4Naturally calms the nervous system, shortens time to fall asleep, and supports sleep continuity. Also aids thermo regulation during deep sleep.
→Combined with l-theanine, increases total sleep time by 38 minutesSupporting ResearchNaturally calms the nervous system, shortens time to fall asleep, and supports sleep continuity. Also aids thermo regulation during deep sleep.
→Combined with l-theanine, increases total sleep time by 38 minutes
GABA
300mg per serving
Rest & Recovery Case Studies
How top athletes use Thirdzy to recover faster, sleep deeper, and wake up stronger—without melatonin or grogginess.
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Jason Grubb
CrossFit Games AthleteWith Thirdzy, Jason’s recovery improved —and his performance followed. He added it to his regimen in 2021, and his sleep metrics have stayed excellent ever since.
Results
Avg additional
sleep timeTraining
readiness+41 mins
Consistently over 84 on Athlytic*+41 MinsAvg Additional Sleep Time“I’ve always prioritized recovery, but sleep was the missing piece. Since adding Thirdzy, I’ve hit new PRs without extra training—just better rest.”
* As measured on Jason’s Athlytic during a 6 week segment of his training season.
Training Readiness
84% Consistently on Athlytic *+41 MinsAvg Additional Sleep Time* As measured on Jason’s Athlytic during a 6 week segment of his training season.
“I’ve always prioritized recovery, but sleep was the missing piece. Since adding Thirdzy, I’ve hit new PRs without extra training—just better rest.”
Jason Grubb
CrossFit Games Athlete -
Care Nelson
Elite RunnerWith Thirdzy, Care experiences deeper sleep and faster recovery—even during peak training blocks. Her overnight recovery scores see a measurable jump on her Oura.
Results
Avg REM & Deep
sleep time added
Training
readiness+1hr 21 mins
Consistently over 87 on Oura**+81 MinsAvg REM & Deep Sleep Time Added“I train hard, I race hard—and I recover hard. Thirdzy gives me the edge between workouts. It’s a nightly habit now.”
**As measured on Care’s Oura over a 4 week segment of her training season.
Training Readiness
87% Consistently on Oura **+81 MinsAvg REM & Deep Sleep Time Added**As measured on Care’s Oura over a 4 week segment of her training season.
“I train hard, I race hard—and I recover hard. Thirdzy gives me the edge between workouts. It’s a nightly habit now.”
Care Nelson
Elite Runner -
Lexi Ross
Olympic WeightlifterWith Thirdzy, Lexi saw measurable improvements in both sleep and recovery quality. Her Garmin training readiness scores jumped, and she now sleeps deeper—without relying on sleep aids that compromise her performance.
Results
Heart Rate
Variability (HRV)
Training
readiness45 to 74 after 3 weeks
Consistently over 88 on Garmin***45-74Heart Rate Variability (HRV) after 3 weeks“I track everything. Thirdzy is the first product that actually moved my numbers—especially training readiness and deep sleep scores.”
***As measured on Lexi’s Garmin over a 4 week segment of her training season.
Training Readiness
88% Consistently on Garmin***45-74Heart Rate Variability (HRV) after 3 weeks***As measured on Lexi’s Garmin over a 4 week segment of her training season.
“I track everything. Thirdzy is the first product that actually moved my numbers—especially training readiness and deep sleep scores.”
Lexi Ross
Olympic Weightlifter
