In your chest that’s where u feel it beating
Cardiovascular endurance, muscular strength, muscular endurance, and flexibility.
I personally suffer from widespread Stage IV endometriosis and mine has never appeared this way. The left side pain isn't necessarily from endometriosis on the colon, it could anywhere in there. The (cherry) angioma would usually not have anything to do with the colon, but angiomas can occur due to a hormonal imbalance (from the endometriosis.)
Wll first of all start a little hard to see how much would be the most your friend can do and then go slowly so that the muscle gets used to fast movement but especially with a correct diet that must follow step by step.
I hope this works for you