A screenless wrist strap that grades your daily strain, recovery, and sleep, then tells you how hard to push. The hardware is included in the membership — beloved by athletes who want coaching, not notifications.
Reviewed
▲ 1
Jun 17, 2026
Independent health service index / 2026
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2 services matching “strain”
DS-01, a two-in-one prebiotic and probiotic with strains selected from published human trials and a capsule engineered to survive to the colon. Subscription-based, with an unusually science-forward pitch.
Reviewed
▲ 2
Jun 8, 2026