So, working out in the local gyms over the past few weeks with a huge influx of gym newbies looking to shift that post-Christmas weight, I have noticed so much emphasis is on ‘mirror muscles’. For those not familiar with the term, mirror muscles literally refers to the muscles you would see when posing for a body selfie… usually chest, abs and biceps! Whilst I’m no way against working these muscle groups, I know training would be a lot more effective if we put muscle groups i