My legs were so knackered that I started to hunch forward and put pressure on my back – which is the only pain the trainers do not allow to continue.
Mercifully the 25-minute session was cut off after 22. However, on that particular day, I just couldn’t get into a positive frame of mind. I hadn’t had enough sleep and was feeling generally quite stressed – which interestingly made the work-out so much harder.
I hadn’t realised how powerful my psychological wellness was in terms of the success of my workout.
But all the pain really is worth it for how toned I am feeling. And I rather miraculously seemed to have shrunk my appetite.
When I went out last week for a slap-up three course meal, during which I chose the healthiest options – I felt uncomfortably full halfway through the second.
It turns out ‘overloading’ my body with food is not as easy as it once was.
To train with Mark Anthony visit his website or call 0207 221 8625
Emma will be keeping a weekly online diary of the six week plan – to follow her progress visit The Telegraph's Health section every Tuesday.