Do you want an iPhone on your wrist or deep fitness metrics?

For your speed workout, try a fartlek run/walk: After a walking or easy running warmup, run hard for 30 seconds or as long as ...

Nick Blackmer is a librarian, fact-checker, and researcher with more than 20 years of experience in consumer-facing health and wellness content. Doing HIIT workouts can improve your cardiovascular and ...

Stop letting an "all or nothing" mentality ruin your fitness goals—discover the time-efficient routine that proves shorter sessions are the secret to lifelong consistency.

High-Intensity Interval Training (HIIT) is a training method characterized by alternating bouts of intense exercise w ...