For over a month, I’ve been adding a variety of classes to my fitness regimen. In terms of my physical and mental health, I feel better than ever… but my skin is another story. Two words: sweat pimples. Exercise is undoubtedly good for skin because it flushes toxins from the body and lowers stress levels. But perspiration mixed with skin irritators like gym equipment, jerseys, sports bras and compression shorts can cause pimples to develop on the face, neck, shoulders, back, chest and even the buttocks.