It has been discovered that the vibration of the treadmill is good for the uterus & sensitivity increases when the heart rate goes up! So this time, we're going to have an amateur girl run at full speed and then aim for sex after massaging her tired spots! Is it really erotic right after exercise!? We will show you in slow motion, without leaving anything out, the shaking breasts, dripping sweat, ragged breathing, and rubbing crotches!