Sure, these mirror muscles garner attention on the beach in the summer and fill out a sweater in the winter. However, you're ...

Not sure which exercises you should be doing during your regular workouts? These are the ones fitness experts recommend.

In her new book, “On Muscle,” Bonnie Tsui investigates the other stuff our thews remember—like how to grow when you exercise.

With the exception of the plank, each exercise should be done for 10-15 repetitions. If an exercise alternates between sides, perform 10-15 repetitions on each side. Try holding the plank for 15-30 ...