It's normal for a 48-year-old to be unable to run when playing basketball. After all, at this age, the body is not as strong as young people in all aspects. Want to improve physical strength, is a persistent thing. Physical strength can persist, and it will come naturally, just like losing weight. Two days of fishing and three days of drying nets will definitely not work.

The methods are: 1, running, you can run in the park or track and field, the running distance is determined by yourself, from short to long, preferably three times a week, and do some stretching after each run.

2. If you think running is too boring, you can take part in some sports, such as skipping rope, badminton (doubles is easier), table tennis, half-court basketball and so on. But the landlord knows how to distribute physical strength reasonably and don't fly as soon as you play.

If the landlord has money, go to the gym to do some aerobic exercise. I believe the coach there can give you good advice.