Well if you want me to give you detail: I just buy shorts and wear plain white T shirts from Target. I think the shorts are $10-15. They have basket ball length (below the knee almost 3/4 length) that I bought accidentally which I do not recommend. The other choice is shorts that I think are made for running that stop at the center or the knee or go slightly bellow it. I think its champion brand. My favorite stuff is from under armor, but Im low on money right now so I use cheap stuff I am not a fan of super baggy basket ball short, I think they look bad and sloppy. I don't really see the gym as a place to look stylish, mostly function, so I get clothes that work and fit right. I normally wear bikeshorts or boxerbriefs under the shorts. If its cold and Im running outside, I wear shorts and a hoodie. If it's colder then 30F, I just don't exercise outside... I've been wanting to get some running tights, as I've tried running in baggy tack pants (swish swish swish), but I am to self conscious to wear them. I've worn underarmor legging (basically tights) for skiing as a baselayer, and my I think it improves my strength and everything when I go skiing. I think they would work great as running gear, but I would feel weird (being a guy) just wearing running tights as a bottom. I would never wear those to a gym though. Track pants with shorts, and remove the track pants and work out in the shorts. I try to buy high quality running shoes though.