The strongest of all cores will save you a lot of joint grief in your later years. I consider myself to have a middle aged mind in a teenaged body. What can you say about yourself? #strongcorestrongbody #corestrength #teenagebody #middleagemind #nevergiveup💪 https://www.instagram.com/p/ChnMSBojmBB/?igshid=NGJjMDIxMWI=














