This 2-day-a-week workout plan targets your full body for strength and size, perfect for those with limited gym time.

These simple but effective changes to your strength-training routine will give you results in as little as two weeks, ...

This14-day core challenge delivers visible results through strategic exercises and nutrition tactics that target the root causes of stubborn abdominal fat.

One writer tried an eight week fitness challenge to see if a yo-yo exerciser can form a lifelong workout habit. Here's her 8 week female body transformation!

I Wore a Weighted Vest for Every Workout for 2 Weeks—Here's How It Transformed My Fitness© Photo: Shutterstock. Design: Eat This, Not That! Man doing pull up exercise.

Aim for 20 to 25 minutes of cardio exercise three days a week. If that sounds like too much, turn Wednesday into a low-stress ...

Writer Halle Newman tried using the stair climber for 15 minutes every day for two weeks. She describes the cardio and strength benefits of using this machine.

This 4-week core workout plan is designed to strengthen your midsection from every angle, using minimal equipment and maximum results.

That’s why we’ve created a four-week weight-loss workout plan you can do pretty much anywhere—indoors or out, at home or in the gym, on a track or in your driveway—with only minimal equipment.

I searched TikTok for “4-2-1 workout plan” and "4-2-1 workout routine," hoping to find a ton of examples of how people are doing this routine. Here are the top results, with my critiques.