A body support includes a binder and a fixing segment. The binder has a left band, a right band, and an adjusting strip between the left and right bands. The left band includes a first fastener. The right band includes a second and a third fastener. When the second fastener is attached to the first fastener, the binder is positioned around a wearer's waist. The fixing segment includes a fourth fastener at its front end attached to the third fastener of the binder, and has its rear end deposited on the adjusting strip of the binder for lengthening the adjusting strip so as to adjust the level of constriction generated by the binder. The fixing segment is equipped with a tension sensor, so a care giver helping a wearer with the body support can properly adjust the tension applied to the fixing segment, thereby ensuring the wearer's wearing comfort.