Around age 35
a 4 hour a day gym habit while sustained
3 hours aft cycling complete exhaustion became.
At nearly age 50
from 5 hours cycling
exhaustion did not follow.
Glycogen storage capacity is not constant.
Like muscles when used growth is attained.
For lethargy for low blood sugar
by caffeine, drugs, energy drinks, sugar
a permanent solution does not become.
Cardiovascular fitness when attained
breathing is easier energy is abundant.
To attain a stationary bicycle suffices.
Does 30 minutes daily cardiovascular exercise suffice?
The effort, duration and boons are commensurate.
4 or 5 hours sustained cycling when possible
that much more cardiovascular fitness, energy, and
effortless breathing becomes.
Infinite exercise technique when wielded
the limits since pushed
the gains are attained.