What is the Fullback Position in football/ and how to play it?

[Cu Tie]

A fullback (FB) is often larger and stronger than a halfback, acts primarily as a blocker, and may also be used for catching passes or for rushing as a halfback does. Moreover, a fullback often lines up closer to the line of scrimmage than a halfback does, so the fullback may block for the halfback.

My best advice for you is to work hard and perform very well in practice every day. In addition, what you need to do this (and every) offseason is eat healthy, exercise by doing weight lifting, and either jogging or going for a long run every day. If you do these things, you will get faster, stronger, and into better shape, which will greatly improve your chances of becoming a successful, top notch fullback in football.