I read zerodish's post a couple of times trying to figure out if it was satire, like suggesting that 2 asprin typically takes care of your headache so taking the whole bottle will take care of it faster. I decided it's serious but if I'm not getting the joke I apologize.
Like zerodish I'm in my mid 50's, like him I set up my long rides at 100± miles a day and the physical challenge of the trip is as important to me as the sights I see. And I get that what works for me may not work for someone else, but how is losing 3"of (I presume) muscle during a ride like this a good idea?
I take my trips is September so when I leave I have 4-5000 miles in my legs for the year so I'm already in shape. I hate wearing a HR monitor but I've done so on a couple of occasions to get a accurate count thru the bike computer of how many calories I've burned and it will read 4-6000. If you don't have a lot of weight to lose, and I don't, those calories need to be replaced.
I start the day with a large breakfast, snack once a hour or so from something out of my jersey, have a medium size lunch and when I get in for the evening I have the largest, most calorie intensive meal I can stuff in my face. And if I simply can't take another bite, I take my second desert back to my room with me to eat later when I've free'd up some space.
I leave for my trips at 145± lbs, I come back from my trips at 145± lbs. My resting HR is in the high 40's to low 50's and my blood pressure, BMI, cholesterol, & blood sugar are all pretty well text book.
Why would you starve yourself for no good reason?
Pete