what are the common injuries one should be careful about when doing AM?

Complete beginner here and have been following AM1/AM2 for about 3 weeks now and am seeing great results (will write a post about that if people are interested).

I just want to get an idea of what are the common injuries/risks. Have read in this sub that kegeling or standing/sitting during AM exercises can result in injuries. What are those injuries and can they happen even when you are doing everything properly, or any signs you should look out for?