At the very least we can find one hour a day to practise our sport. When we choose that hour is our prerogative. Roger Bannister as a medical student at St Mary's Hospital, Paddington, chose to use his lunch hour for a 10-minute jog to Paddington track, where he ran 10 X 440yds in about 60 secs with two minutes rest, then he ran back to work. The whole procedure took 48 minutes, leaving him time to eat his lunch. If you want to train for sport you can always fit it in somehow.
Time is precious.
Our lease of life is 70 years. We know little of the first and last five years. We are at our physical peak in sport for about five years, although we may compete in one way or another for 25 years. This means that every training session is a precious piece of our time. It is an investment which will pay dividends in the future.