First buy a yoga mat, then download a fitness software keep, and finally choose "zero noise and fat reduction" training. Other kinds of unarmed training are also good. Go |? ω? ) I exercise well with yoga mats in the dormitory, and my roommates don't think I'm noisy ~ I won't be noisy downstairs. As long as you don't do too much skipping, you won't disturb the neighbors downstairs. _)?