Heya!

I've taken it before, though I would not recommend it to anybody, you need a good enough sleep everyday.

Modafinil gives you focus and lessen your need to sleep, but of course it does not give you any motivation. You simply do not feel the need to sleep, BUT, you actually do feel tired. That means, if you are doing sports the whole day, you are still gonna feel the fatigue, but you won't feel sleepy.

Use it at your caution.