Get ready to #sweatwithkayla: The creato...
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Get lean, tight, and totally bikini-read...
Grab a set of dumbbells for an efficient strength training circuit that creates lean muscle you can flaunt in your bikini.
Score the bikini-worthy body of a surfer with a 20-minute fat-burning circuit designed to recreate a wave rider's moves (no actual surfboard required!).
Slim, trim, and tone with the first installment in the Summer Shape-Up series from the man behind P90X.
The superstar creator of the 21 Day Fix shows you how to jack up plyo moves to deliver full-body results—fast.
Our fitness editor visited the UFC Gym in Manhattan for an empowering kickboxing routine.
In need of a quick mood boost? Try these easy poses to increase endorphins.
PMSing? Check out this video for easy poses that will relieve headaches, cramps, fatigue, lower back pain, and uncomfortable cramps.
Grab your legwarmers, because Jane Fonda is back.
Work out at home with the next best thing to a personal trainer.
Find out how the angel prepared for the Victoria's Secret Fashion Show with this exclusive, total-body workout.
This suspension device can be super effective for toning and strengthening your entire body—if you know how to work it.
Get a total-body workout, quiet your mind, and improve flexibility with this pose.
Trainer Jessica Smith shows you how to blast calories and rev your metabolism in just 5 minutes!
Trainer Jessica Smith takes you through an incredibly quick strength routine that only requires a little bit of space.
Follow along as trainer Jessica Smith leads you in the third workout in the Black Friday Fitness program to help you stay in shape over the holidays.
Combine the core principles of both practices for a super effective routine that really tones your core.
Trainer Jessica Smith leads a heart-pumping cardio workout to help you blast fat in minutes wherever you are.
Follow along with the first workout in the Black Friday Fitness program to kickstart your healthy holiday season.
This intense workout will teach you the skills you need to outrun, evade, and, if necessary, battle the walking dead.