Sweets that I often crave. A better replacement would be water. Or unsweetened tea warm. Both would allow my food to digest properly and no calories.
After a meal, it is best to avoid very jolting physical activities, because it can mess up your digestive system. The last part often shows itself as nauseous feeling in your stomach.
Honestly I avoid unnecessary snacks after a meal and give myself time to relax a bit for my food to digest, I love having green tea after a meal I usually avoid working out immediately after a heavy meal so I don't feel sick after, maybe relax and have a cup of green tea?