Entertaining to read childish debates about gym or hiking. You can also go running, cycling , swimming( the cycling paths and the ocean remain open) do body weight exercises like push up, pull ups , inverted rows, planks, core exercises, use resistance bands. There are many paths to the top of a mountain and just one. As to healthy eating, it's a totally separate issue that has nothing to do with the exercises that one chooses to do. Here you can start another debate... Who is the better/fitter athlete? Woods, Federer, Lebron? Ronaldo or Jeff Cavaliere?