i usually think that exercise will help speed up the whole comedown process, you would think the more you sweat the more your bodys filtering out the drug. if you dont binge on amps and your main problem is not being able to sleep you could try taking it at a certain point so you know by the time you want to go to sleep you will already be mid comedown. but if you do exercise drink plennnnnnty of water as you will get dehydrated extremley easy, and keep it light, jogging around for 5mins, jumping jacks, push ups, dont do anything that would cause to much stress on your heart..