Pick out the most effective pair of words from the given pair of words to make the sentences meaning fully complete.
Forever Young Naturally Exercise
Working with Weights When to stop
Mild discomfort is to be expected (and enjoyed as a sign of muscles working hard) but stop weights work and take a breather, stretching out, if at any point you find it hard to catch your breath, the muscles start to burn, you feel sudden pain, or you can’t maintain good posture. Move down a weight size and try again or come back to the exercise when you feel stronger, perhaps in a couple of weeks’ time.