Food and Entertaining How can I reduce my side boobs? How can I reduce my side boobs? - Diet. The breasts are mostly made up of adipose tissue, or fat. ... - Exercise. Like diet, exercise can help a person lose body fat, which might also help reduce breast size over time. ... - Reduce estrogen. ... - Binding. ... - Change bra. Related Posts:How long does it take for tits to grow?Can push up bra increase breast size?How do you make a sports bra with a push up bra?Can you purchase over the counter estrogen?