Foam rolling is an effective and gentle way to warm up your whole body. It also helps release tension and aids recovery from intense exercise by facilitating the removal of lactic acid from the muscles.
If you’re just doing a general warmup, you can do around five passes with the roller on each location. If you’re recovering from an intense workout and your muscles are fatigued, you might want to do 10 to 15 passes, or more. I recommend lingering on any areas that are tender.