As a PE teacher, you're always looking for new ways to start class. The first 5 to 10 minutes of a lesson may be the most important part of class, and they can make or break the whole lesson. Starting with a fun, dynamic warm-up grabs students' attention and keeps them focused for the rest of the lesson. Quick Answer: PE instant activities are quick, low-prep activities students start the minute they walk into the gym, so no class time is wasted. This post shares 6 favorites: