Reduce overall body fat with a calorie-controlled diet
Do regular full-body cardio exercise
Add strength training to build muscle and improve body composition
Limit salty foods to reduce water retention
Stay hydrated
Get enough sleep
Manage stress
Avoid excessive alcohol
Keep hands active with stretching and mobility exercises
Use a cold compress if swelling is temporary
Elevate your hands when they feel puffy
Check for repetitive strain from typing, gripping, or manual work
Consult a doctor if hand swelling is sudden, painful, or persistent