Strain and recovery wearable, the WHOOP strap, recently announced series 3 funding of $25million. WHOOP have got some serious heavy-weights on their board including exc-PUMA and ex-UBER execs. Not to mention significant levels of usage amongst high-profile NBA and NFL players.   Source: whoop.com and sporttechie Resources: WHOOP manual Detailed review: below   WHOOP Review:…