Ok started out last April riding a bike have a 21 speed 1973 schwinn varsity.
Any way when I first started out on April i st struggled a LOT But as time went on I got stronger every day.
So far have gone 998 miles since April. Today I get on my bike and went 7 miles and I was struggling bad out of breath legs tried like I never rode a bike Its not hot is a nice cool day .I don't get it I am 64 years old has any one had this happen to you