Discover how this comprehensive 7-day HIIT program maximizes fitness gains through expert-designed workouts and evidence-based recovery strategies.

Day Ultimate HIIT Challenge will boost your metabolism and build strength. Access the full program schedule and workout ...

In less than 20 minutes, you can sculpt your arms and abs with this upper body dumbbell workout, all while getting your heart ...

Follow along with trainers Jacqueline Kasen and Gerren Liles in the workout video above, or if you're ready to HIIT it solo, read the instructions below for a self-guided workout.

Is it possible to be as fit in your forties and onwards as you were in your thirties? Perhaps even fitter? Yes it is, say ...

Don’t let age hold you back: it’s never too late to build a more resilient brain and body We used to think that the only ...

The former Eagles star talks about his post-football training and diet—but not who he's rooting for in the big game this ...

But walking 20,000 steps a day brought on a refreshing kind of exhaustion. Her body welcomed rest, and she drifted off faster ...

How doing 100 push-ups a day for 21 days straight can transform your body and change your mind about this classic bodyweight ...

If you have 20 minutes, you have all the time you need to level up your abs with this quick bodyweight workout, which is part ...

For the full 28-day transformation program including daily workout videos and guided walking podcasts — plus meal plans and inspiration — download the Start TODAY app!