December 13-24
December 13th — 1-minute plank
December 14th — 2 sets of 10 push-ups
December 15th — 3 sets of 15 squats
December 16th — 4 burpees
December 17th — 5 jumping jacks
December 18th — 6 lunges (each leg)
December 19th — 7 mountain climbers (per side)
December 20th — 8 sit-ups
December 21st — 9 tricep dips
December 22nd — 10 high knees
December 23rd — 11 Russian twists
December 24th — 12 minutes of any cardio (running, cycling, etc.)