Some guys don't like girls to wear track/jogging suits. Personally, I think they're Hella Cute! In fact, I got 1 a few years ago cause I thought they looked so good & wore it til it fell apart! I had a friend that would tuck a tee unde the jacket in case she got hot. Then when she unzipped or took it off, sometimes she'd untuck the tee & sometimes she wouldn't. Then again, she liked wearing shirts tucked in, & I don't think anything is wrong with leaving the shirt out & layered beneath the jacket while it's zipped. That part is a matter of personal preference. Have you tried 1 on? I am of the opinion that girls know how they look best. If you think they look good when you see others wearing them & like how you look in them, I'd go for it!
That's a track suit, not an outfit. even casual things, like going to class, or hitting a fast food place for lunch, looks awkward in that. it's normally ignored, or assumed the person simply hasn't changed yet after a workout or something, but it's not what we think people look great wearing, or look appropriate wearing, even in super casual circumstances,
I wouldn't wear it, especially if I weren't going to work out. That looks out of style. I would wear a different kind of sportswear, not that one. All that outfit needs is for it to be in neon colors, and it would look like it came straight out of the 80's.