TRAINER: Gennifer Strobo Perform each exercise for 30 sec. with 20 sec. rest before the next move. Repeat 2–3 times.Mountain ClimbersStraight-Leg Front KickTriceps DipHamstring BridgeV-Up StepupPushupSwitch LungeGood Morning (shown)Sumo SquatSEE ALSO: 20 Minute Time Saver Workout: Ab and Leg Blast