What can I do in 8 weeks to improve my health and fitness? I have a major life event coming up and would like to go into it feeling happier and healthier and less exhausted, as well as looking better. I have a BMI of 33 and would like to tone up a bit. I've joined WW and am doing reduced-carbs within that - so less bread/pasta/potatoes and sugar. Can anyone offer any encouragement about how much I can lose or whether it's enough time to make a difference to my fitness?