I am a full time college student, with both a full and part time job. So finding time to hit the gym is nearly impossible for me. My apartment complex has a free gym but it closes at nine which is hours before I actually get home.
Last semester I took an intro to exercise class and learned a lot of different exercises. I have used that knowledge to create a great at home any time of day work out.
Make a play list of music make sure you make a third of your songs slow ones. Then hit shuffle.
When a fast song comes on get moving! I am talking whole body here. No one is watching so make your moves big and dance skill is not required. Have your dumb bells When a slow song comes on do your strength training and don't forget those legs!! bounce to keep your heart rate up!