On HIIT timers, why does "F" stand for "work" and "C" for "rest"?
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in fitness@lemmy.world from ChaoticNeutralCzech@lemmy.ml on 05 Apr 2024 18:07
comments (11)
in fitness@lemmy.world from ChaoticNeutralCzech@lemmy.ml on 05 Apr 2024 18:07
comments (11)