To get a visible six-pack, you need to hit your abdominals from different planes of motion and work compound moves into your workout mix. The following bodyweight routine, provided by Eric Salvador, personal trainer and head instructor at NYC-based gym Fhitting Room, capitalizes on those ideas and will help reveal your abs in no time.
The best part is that you can squeeze this workout in just about anywhere—the exercises are completely conducive to small spaces and time crunches. Fill the rest of your week with traditional weight lifting and training moves and don't forgot: A good diet is essential.
Prescription: Do this workout 3 times a week on non-consecutive days. Complete 3 sets of each exercise for the recommended time, taking one minute of rest between each set.