What's a typical day for a college athlete?

It depends a lot on your sport, your school, and whether you're in season or not. I answered a question about in-season schedules here: https://careervillage.org/questions/3725/if-you-join-a-college-sport-how-does-it-affect-your-schedule

But depending on your sport, you might have practice in the morning instead of the afternoon, for example. This is particularly true in the off-season if you're walking on to a Division I program - strength training and conditioning sessions are often in the morning, and sometimes even your sport's practices in the offseason are early in the morning, too, to give people flexibility in scheduling practices.

It looks like you might play football, from your icon and the question topics? If so, your inseason practices will probably be in the afternoon, and offseason early in the morning. Plus there will be positional meetings and things like that, which can be any time of day depending on how your coach schedules it.

Regardless of when your practices are scheduled, you'll need to be disciplined. Your days will be full of school and practice, and you need to make sure you're on top of your work academically, while also eating and sleeping well to ensure you're at the top of your game athletically. It's fun to play a college sport, but there's also a lot of work and preparation that goes into improving each day athletically and academically.

I wish you the best of luck walking on! :)