There were three other guys (or should I call them test subjects?) with me as we took turns in doing 3 sets of 5 reps of each exercise with rest in between. There seemed to me at least, to be a sense of competition- who could lift the most weight!! I avoided the temptation to act all macho of trying to equal the weights the other guys were doing. It's an absolute killer on the lower back and hamstring muscles.
I managed to squat around 100kg on the half squat and something similar in the calf raises. As soon as I initially took up the weight to assume the position to start the exercise the heels of my trainers sink into the floor. After putting the weights back onto the rack it felt like I began to float upwards as the weight is relieved from your legs.
Getting out after the 14 minutes and into the changing rooms I was shivering for a very long time. I got all the clothing I could on for the journey home; shorts, base layer, top, rain coat, arm warmers , and winter gloves. Despite it being very sunny outside I still didn't feel the heat all the way 20 odd miles home. I somehow got lost again on the way home... I might consider getting the train again as it's a lot of hassle riding through London where there are traffic lights every 100 meters.