Reduce overall body fat with a calorie deficit
Do regular full-body strength training
Add cardio or interval training
Train upper body muscles, including chest, back, shoulders, and arms
Improve posture to reduce the appearance of armpit fat
Wear properly fitting bras and clothing
Limit processed foods, sugary drinks, and excess alcohol
Eat enough protein, fiber, fruits, and vegetables
Stay consistent for several weeks or months
Consult a doctor if the area is painful, swollen, or unusually firm
Consider a dermatologist or plastic surgeon for stubborn fat or excess tissue