The latest science says that this simple shift – speeding the pace of your sets – accelerates your strength gains. Here’s exactly how to tap the effect.

When you’re home with the kids or short on time, this is all the gym you need to get a routine done.

This transforming workout torches calories, builds lean muscle, and unwinds your mind so thoroughly, you forget about everything else.

Get high-intensity sculpting from abs to calves with this genius workout upgrade.

Cover girl Denise Keller shares how she feels younger and happier than ever in her mid-30s – thanks to yoga, a healthy diet and living mindfully.

Get it all done in record time with super moves that firm, burn, flatten, and crank up your cardio.

This is the serious muscle-sculpting routine that strengthens any hard-to-firm spots.

Fitness guru Jillian Michaels’ creative take on dumbbells will transform your body, giving you the strong, streamlined muscles you’ve been repping for. Guaranteed.

Introducing your new go-to lean routine. You’ll burn some 250 calories and trim flab all over using zero equipment.

Warm up for five to 10 minutes by doing dynamic stretches – lunges with rotation, plus arm and leg swings – to loosen and activate muscles. Then start a one-minute timer and do as many reps of the first move as you can in that time. Record your score when done (on paper or into your phone) and start the timer again for one minute of active recovery: Jog in place, jump rope, or ride a stationary bike. Repeat this process until you have completed all 10 moves. Finish with a five- to 10-minute cool-down of static stretching. Save your score and retest yourself with this same process one week later to see how much you’ve improved.