This week is fitness week at Book Your Lifestyle: 7 top workouts from 7 of our top London Personal Trainers. And what better workout than one you can do in the comfort of your own home. They are all virtually free, easy to follow and achievable, with great results guaranteed.  Our personal favourite is the TRX, a tough workout using body weight.. Which one is for you?  Best ‘at-home’ exercise you CAN do.. for a new fitter you