Jennifer Lawrence's workout routine- Cardio Warm-up: Cardio warm up on stationary bike (10 minutes) Lower Body Warm Up: Walking Lunges (15-20 reps per leg) Jump Squats (30 secs on / 30 secs rest) Lateral Lunges (10 reps each leg) Step Ups onto bench (10 reps each leg) Pushups (20 reps, use knees if necessary) Straight-Leg Sit-Ups (15 reps) Side Planks (30 secs hold) Repeat each exercise 3 more times (rest 60 secs between sets) Medicine Ball Workout.    Evening – (30 Minutes on a stationary…
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