How many calories would I need to do this please!? I'd love to lose a stone and possibly a bit more! I'm 5'6" 43 years old and 11stone 8 😰 Help! Calorie counting will work for me if I stick to it and know how much but I am getting in a muddle with calculators online! I will do 30 mins on the cross trainer 3x a week and try to do 10,000 steps