Question

When john first bought his new house, he could mow the yard in the morning and then go for a run in the afternoon. john, who is now in his late fifties, finds that mowing the yard completely wipes him out for the day. john is experiencing a decline in his reserve capacity. reserve stamina. reserve capability. reserve oxygen supply?

Answer 1

John is experiencing a decline in his "reserve capacity".

In people, the phrase reserve capacity can be characterized as the overabundance limit, or reserves, over that required for typical working, as in completing exercises of day by day living. Numerous frameworks of the body have reserve capacity. Such reserves are vital for the body's frameworks to make suitable acclimations to typical vacillations and unforeseen increments in load, to react to crises, and to go about as safety nets.