PROBLEM TO BE SOLVED: To provide a fatigue reduction suit that enables a wearer to rapidly and easily discharge urine.SOLUTION: A fatigue reduction suit 1 comprises expansion means for supporting expansion/contraction of a muscle of a wearer 4 by urging his/her muscle in the direction of the expansion/contraction of his/her muscle. A front surface of the fatigue reduction suit 1 is provided with an opening 22 for constantly keeping a groin region of the wearer 4 in an open state.SELECTED DRAWING: Figure 1