I'm working towards joining as an MCD and understand the fitness standards required are higher than normal. With that in mind, what sort of level of fitness does anyone (pref. a former MCD) suggest? i.e. 60 press-ups, 80 sit-ups, 1.5 miler in under 10 etc. On the same note, will I need to be a fantastic swimmer or do basic skills (breastroke, being able to swim underwater) count?