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We're all busy, right? But you don't need a lot of time to work out, we swear. In fact, if you do Tabata exercises, you only need four minutes. FOUR!

Four Minutes to Fit: Maximize Your Time with Tabata Workouts

Legs Like Jello Leg Workout

Legs Like Jello Leg Workout | Peanut Butter Fingers

Quick strength blitz. This takes about 30 minutes to complete and will have you dripping in sweat!

The Fitnessista

Giant Collection of Upper Body Workouts

Upper Body Workouts | Peanut Butter Fingers

Feelin' Lazy Treadmill Workout - A great way to ease into a workout when you're just not feelin' it!

Feelin’ Lazy Treadmill Workout | Peanut Butter Fingers

Change up your usual burpee with one of these 10 variations! Perfect for increasing cardio fitness and quick, effective fat burning

15-Minute Winter Olympics Inspired Bodyweight Workout from @DailyBurn

15-Minute Olympic-Inspired Bodyweight Workout [INFOGRAPHIC]

Jump and Burn Travel Workout from The Fitnessista -- guest post on my blog today! Click through for tips and modifications.

The Scientific 7-Minute Workout -- do each exercise for 30 seconds, with 10 seconds of rest in between. Rinse, repeat!

The Scientific 7-Minute Workout