Cassidy Thompson on MSN
One of the hardest fitness challenges I have tried
One of the hardest fitness challenges I have tried pushing strength, endurance, and mental focus to the absolute limit #FitnessChallenge #StrengthTraining #AthleteLife ...
A new study in Medicine & Science in Sports & Exercise finds that a 7 out of 10 effort level is optimal for VO2 max improvements and overall fitness.
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