im sure it can be done. my current waist is about 26 and a half inches. i think my diet is probably good enough already, so i think the only thing that needs to change is my workout at the gym. currently i go 3 times a week for an hour each time, and either play tennis or go swimming once a week aswell.
at the gym i do
5 minutes running
2 sets of 12 on the chest press
5 minutes on the cross trainer
2 sets of 12 on the leg press
2 sets of 12 on the leg curl
2 sets of 12 on the lateral pull down
3 minutes cycling
all of that times 2.
by the way that is all the equipment there is in my gym.
at the gym i do
5 minutes running
2 sets of 12 on the chest press
5 minutes on the cross trainer
2 sets of 12 on the leg press
2 sets of 12 on the leg curl
2 sets of 12 on the lateral pull down
3 minutes cycling
all of that times 2.
by the way that is all the equipment there is in my gym.