True, abstinence is the practice of giving up something, it necessarily doesn't have to be all about sex, which is many average thinkers are taught in schools. It can be alcohol or even toys and games!
It can be a home gym because during free time he can do it so it can give him good results.
Examples of Kinds of Human Environment Interactions
The use of natural resources
Deforestation
Energy resources
Oil and gas drilling
Water resources
Relationships between human activities and the surroundings
Vehicle production
Littering
HOPE THIS HELPED