i will add another thing to the equation. Certain medications and supps can also have an effect of functionality. Im 183.6% sure if i didnt use sleep meds i wouldnt have been able to work. I will add the non ME stuff like my back, i literally cant stand up straight until my tramadol has kicked in.I think what has also helped me was that i had a varily high level of strength pre cfs, even now i guess im stronger then most average sedentary guys on the street, even though my back is riddle with arthritis, but its strong rusty arthritis lol, i will keep telling myself that, hehe. Cardiovascular fitness, well its just crap. I have a theory, most fights end within a couple of punches, so i have a chance of winning unless it lasts longer then 20secs?????