I'm not sure if you have choices or not but many abusers use substances to numb feelings in order to avoid negative feelings.
Numb
The scientific name for table salt is sodium chloride.
There are many human relations skills which can help you to more willingly take on a challenging subject. Greater self-confidence is one of those for example.
Being more self-confident enables you to trust more in yourself and therefore to also think you can succeed better with more challenging topics in comparion to the scenario where you don't really think highly about yourself.
A) Lubricate
the muscles used in the activity. This is because when doing stretches, it helps push blood into the muscles, which I ‘warms’ and preps the muscles for the workout.
When your muscles are sore it can mean you worked it out, but also can mean other things like straining. If you feel a tight sensation when moving your body. It means you have worked on that area well! :}