However, when you buy something through our retail links, Condé Nast may earn an affiliate commission.As a certified personal trainer and fitness instructor, I’m a big fan of IRL classes, but the best ...

Sprint interval training, or SIT, is super trendy right now. It’s a great way to improve your running speed and to get in a ...

Two main protocols are commonly used to determine VO2 max: ...

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Staying active is one of the top priorities for many retirees over 60. Experts agree that regular exercise can boost ...