Cold hands? This method works way better than the well-known hand-swinging technique. Do this exactly right and you’ll feel a sudden rush of blood to your hands. If you don’t feel it, start again at step 1. It’s not about the number of reps but their quality. Count to one Mississippi after each.

1. Stand tall, like a soldier, with your arms stiffly straightened at your sides. Point your hands out at right angles.

2. Shrug your shoulders up as high as you can, near your ears, and hold them there for a beat.

3. In a sharp, violent motion, force your shoulders down.