Cat and camel exercises are great for stretching and strengthening muscles of the back, especially the lower back. Learn how to do cat and camel exercises in this strength training video. Take action: get on hands and knees, arch back like cat, flexing abs, let the back sag, sticking out butt, holding each position for 3 seconds, and repeat for 5 reps. Tom Clifford, the instructor of this how-to video, has a degree in physical education, fitness and health from Eastern Michigan University,...