Jennifer Lopez swears by exercise for her mind and body - and it looks like it's working. The Jenny From the Block hitmaker posed in a hot pink sports bra for an Instagram snapshot which left her fans in awe of her healthy physique.Jennifer, 51, shared the photo on Tuesday urging people to vote in the US election, and in the process her followers got a sneak peek at her gym-toned figure.MORE: Jennifer Lopez with a pixie haircut has to be seen to be believedWATCH: Jennifer Lopez and family have