Okay, I have asthma and live at 6000 feet so I take my blood ox saturation a few times a day--always around 93% (96-98 when hard workout)--now, two days in a row, it's been 96 resting. Workouts felt, well, hard after such a long layoff as expected but on a 50 min spinning bike ride I was surprised by the increased cardio output (98-100blodd ox and 325 watts). Thus, after just 2 days, it does something to O2 transport--even resting. I keep crazy records so wee will see if this continues, was a quirk, or as suspect a result of the GW-50. I have done this too long not to notice when I feel different. I now know why the WADA (doping police) went and banned it already--for those who don't know that small % change is the difference between winning and never having a chance.
More to follow -- more details on strength as I establish a baseline.