Are you trying to get a bit fitter in 2013? If you can't afford a gym membership and don't want to brave the cold, fitness videos can help you shift some pounds and tone up, all from the comfort of your own home.
We have scoured YouTube to bring you the 10 best fitness channels offering free workouts of all varieties, from pumping iron to Pilates.
Take a look through a sample video from each channel in the video gallery above. Share in the comments below any other YouTube exercise gurus you subscribe to.