what is better for strengthening leg and arm muscles: walking or biking?

Explain

If your goal is “strengthening” as you say, then biking would be better. Biking offers more resistance and stress to the muscles of both the legs and arms. Reistance and stress on the muscles build muscle and strength.

If you are just starting a fitness program from a fair inactive lifestyle, you might want to consider walking as a “first step.”

Triathlon Training Programs : Shoulder Muscle Exercise for Triathlon Swimming

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