Peter Attia feels as strong but fatigues sooner and requires longer recovery between sets by day 3-4 of water-only fasting.

“Took at least a 60-80 watt hit during fasting week.”

“I feel just as strong, but do fatigue sooner and do require longer to recover between sets, but this only kicks in by about day 3-4 of water only.”

“the total cholesterol went down and I think that's a real drop it went from you know about a buck 20 to 90 milligrams per deciliter”

“my water was decimated so I normally ride in power zone so peloton now allows you to see your zones so there's seven zones it's like the Andrew Cogan is a bike you know physiologist who's created a system and Matt will pursues my favorite peloton instructor he does all of his classes as power zone so I know exactly what zone one two three four five six and seven are and every workout we do is congruent with that well I even going into this said such reset your expectations you will do a discount of one zone so if you're doing a zone if you're doing a workout where you're going you know two minutes of zone three two minutes of zone for one minute of zone five repeat I would just do it all minus one and even doing that I could not keep up so in other words relative to my former self I was at least sixty if not 80 watts less capable there was just no denying it”

“I don't think I've lost all that much might have lost a little bit I was definitely engaging in weight training I had a like a tanita bio impedance scale and I do remember just in terms of you know taking out the lean tissue at lean tissue the fat free mass and the fat mass it didn't look like at least on the scale although that's heavily weighted with your hydration and water status so I don't know how consistent I was when I was doing it it didn't seem like I lost all that much lean tissue”