You will get better if you stay with what you enjoy. Even if you do suck TRY HARDER!
5 One-Song Workouts - BuzzFeed Mobile
I love working out to music, any workout that takes a song to complete a dancers going to LOVE! Lose weight FAST with the Caveman / Paleo diet!
3,500 calories is equivalent to 1 lb. You burn aprox 100 cals doing jumping jacks in 10 minutes. Translates to ~ 350 minutes/4 hours a week/50 minutes a day. Possible? Maybe. 10 sets of 5 minutes of jumping jacks every day for a week.