Here are 8 of the best exercises you can do at home if you want to get a flat stomach and shrink belly fat fast: 1. Leg Drops 2. Reverse Crunches 3. Knee Tuck Crunches 4. Russian Twists 5. Reach Through 6. Heel Touches 7. Single Leg Jacknife 8. Plank All these exercises are body-weight …