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30-day wearable-powered study • 25 participants
We evaluated the LyfeFuel Essentials Nutritional Shake on sleep, activity, and recovery.
Essentials Nutritional Shake shows measurable improvements in sleep duration and heart-based recovery markers.
Top improvement metrics across the cohort (baseline → intervention).
+7.74%
Raw change: +0.04 min
Participants increased engagement in moderate daily activity.
+2.43%
Raw change: +9.82 min
Longer overall sleep enabled more complete sleep cycles.
+1.34%
Raw change: +0.94 min
Supports physical repair, recovery, and hormone regulation.
+1.14%
Raw change: +1.05 min
Essential for cognition, memory, and emotion processing.
-2.04%
Raw change: 1.50 bpm
Lower minimum HR reflects deeper rest and recovery.
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These measures also changed during the study (direction shown below).
+0.16%
Share of time in bed spent asleep.
-0.21%
Slight reduction in sleeping breathing rate.
-1.19%
Less wake time at night improves sleep continuity.
-2.04%
Lower minimum HR reflects deeper rest and recovery.
-2.37%
Improved cardiovascular efficiency while sleeping.
-3.26%
Slight decrease in light sleep minutes during intervention.
-11.91%
Observed reduction in HRV during the study period.
A look at the diverse group of participants in the study.
Sleep duration improved (Total/Deep/REM), while heart-rate measures trended downward, indicating better nightly recovery.
Light Sleep decreased modestly, suggesting more time redistributed to restorative stages or natural night-to-night variability.
Targeted iterations (serving timing, satiety tweaks, flavor options) could reinforce adherence and outcomes in the next cohort.
| Area | Action | Rationale | Priority |
|---|---|---|---|
| Satiety | Explore formula tweaks or guidance (fiber/fat add-ins) to improve fullness. | Multiple comments on being hungry post-shake. | High |
| Flavor & Texture | Offer additional flavors (e.g., chocolate) and reduce graininess. | Taste/texture feedback appeared frequently. | High |
| Timing Guidance | Provide suggested intake timing (e.g., morning vs. evening) based on goals. | Participants suggested timing might influence satiety and outcomes. | Medium |
Recommendations derived from participant comments and observed metrics.
Based on 22 of 25 participants who completed the post-study survey (88% completion).
5 of 22 participants
Mentions of helpful support and perceived benefits.
3 of 22 participants
No comments / general notes.
11 of 22 participants
Taste/texture (grainy), satiety, desire for more flavors.
3 of 22 participants
Participants did not provide a qualitative comment.
Approximate share based on manual coding of free-text responses.