There are a few ways that students try to get out of Physical Education (PE) lessons. Some common methods include faking an injury, pretending to be sick, or simply not showing up to class. However, these are all unlikely to work as most schools have policies in place to deal with such situations.
The best way to get out of PE is simply to do your best and participate in the lesson. If you show your teacher that you're trying your hardest, they'll be more likely to let you off the hook if you don't want to do something specific. For example, if you have a medical condition that prevents you from taking part in certain activities, your teacher will probably understand and let you sit out. However, if you're just trying to skip class because you don't feel like exercising, it's unlikely that your teacher will let you off so easily!