Characteristics and Events Comprising Your Highs and Lows Exercising with MG

What do your highs and lows look like or what is characteristic of these moments when attempting any exercise or physical activity with Myasthenia gravis?

What makes for a moment when you think, "I'm really proud of myself" or "I wasn't sure if I was going to be able to do that."

What is going on usually when you feel defeated, not capable, and down in the dumps?