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Exercise! Stay warm. Rinse your face with warm water.
One sure-fire way to get your cheeks nice and red is to simply do a little exercise. It's no secret that activities like playing sports, jogging, lifting weights, and doing calisthenics can make you flushed — generally, the more intense the exercise, the brighter your cheeks will be. Note however, that a regular exercise routine can actually make it harder for you to get rosy cheeks in the long run. If you're able to reduce your blood pressure with steady exercise (which, by the way, is a good thing!), the capillaries in your cheeks responsible for giving you pink cheeks won't fill with blood during exercise as easily. Keeping yourself warm and cozy in cold weather can sometime have the side effect of giving you pink cheeks. When your body temperature is hot, the body automatically redirects blood from the inside of your body to the blood vessels near the surface. This blood causes your cheeks (and likely other parts of your body) to get a reddish or pinkish tinge. Don't go overboard here — wearing a warm coat in winter is a good idea, but deliberately subjecting yourself to uncomfortably high temperatures can be unsafe. Cool off right away if you start to sweat profusely or feel light-headed. A nice facial rinse doesn't just feel great — it can also give your cheeks a "splash" of pink! Heating up the skin of your face with warm water causes the body to direct more blood there. This extra blood can make your cheeks a little pinker with very little effort on your part.