I know we don't always make it to the gym, or even have access to one. For that reason, I give you the 100 {reps} workout! It's hard, it's convenient, and most importantly it's EFFECTIVE {aka worth it}.
Keep this one in your back pocket for vacations, trips, long days at the office, or just for a quick total body BURN. Try and take as little rest as possible between each exercise and after each round. If you can't do 20 push-ups (with good form...very important), lose your ego and drop down to your knees. This option is way better than doing incorrect push-ups on your toes.
I'm pretty sure you won't need any pictures to explain these exercises, but let me know if you do. :)
100 {reps} WORKOUT
5 Rounds of:
20 pushups
20 squat jumps
20 situps
20 reverse lunges
20 knee to elbow (per side)