What does 'excellent' mean? It all depends on bone structure, genes, build, which sports you favour... and so forth. Everything featured here is definitely 'excellent' but they can appear very different. It's simple: you exercise regularly - things greatly improve.  Simples .   Teens: ...and some younger than that, with great ambitions and goals. Good for them! 

 No apology for coming back to the sport that creates great bodies alongside flexibility, strength and endurance.   You don't  have  to be in an indoor gym to train... Rain? So what...?