Sure. I know a boy who wanted to be like his action - hero idol. He focused on building his biceps. He practiced rock climbing which really worked out his arms. His biceps got bigger and stronger. Eventually, he could climb difficult routes that his friends couldn't. His biceps were a key part of his achievement in rock climbing.
A boy in my neighborhood was very skinny. He was self - conscious about it. So he started a fitness routine to build his biceps. He would do bicep curls every day. As his biceps grew, his confidence grew too. He started wearing sleeveless shirts to show off his biceps. His story is an example of how building biceps can have a positive impact on a boy's self - esteem.