getpumped

Don't forget the obliques. One of the best exercises to work all 4 abdominal muscles is the bicycle crunch slow and focused is the key. Not entering the Tour De France 2 sets totalling 1 minute each and you'll be feeling those Abs you want to be seeing

You should eat something every 2 to 3 hours to keep your metabolism at it's highest. If it's been over 3 hours since you had breakfast, then have the snack before you go. If your lunch finishes at 1pm then you would be ok having the snack after your walk.