That’s not really true as long as you keep pushing yourself and aren’t aiming for extreme performance. Wind sprints for example are still useful if you want to compete a marathon in say 6-8 hours.
As to pushups and pulling things, back strength from supporting your body weight on your shoulders would help you pull things. Clearly practicing the motion you want to improve is optimal, but controlled motion generally involves a lot more skeletal muscles than just what’s being targeted.
As to pushups and pulling things, back strength from supporting your body weight on your shoulders would help you pull things. Clearly practicing the motion you want to improve is optimal, but controlled motion generally involves a lot more skeletal muscles than just what’s being targeted.