The stretches you get here are really mobility and warmup exercises. "Stretching" a muscle or tendon has pretty much no health benefits. If it feels better, it's because the muscle is weak and straining most of the time. The fix is not stretching but strengthening.
Upper body -- swimmer stretches (PDF): http://www.usmsswimmer.com/201001/swimmer_stretching.pdf
The stretches you get here are really mobility and warmup exercises. "Stretching" a muscle or tendon has pretty much no health benefits. If it feels better, it's because the muscle is weak and straining most of the time. The fix is not stretching but strengthening.