First off we are going to talk about on the bike posture and technique. First off, body position, body position is so critical in motocross. Such as where you should be stationed on the bike and as well as rolling out of the corner. For 90 degree corners its critical you hit the corner with your leg up and position your body all the way up on your gas tank. This helps the center of gravity so you can whip the bike around and ride out really fast and keep your momentum up for a whoop section or a triple.
 when are going around a rolling corner its best to be standing up or if you're not comfortable be sure to sit and hold the gas wide open, there should be no reason for breaks.