What happens if you lie on your back

Losing yourself in a massage or facial can be a true pregnancy pick-me-up, but after about four months you should no longer enjoy these treatments while lying flat on your back. "Lying flat on your back could drop your blood pressure and decrease blood flow to the baby," says Dr. Greenfield. Since your new shape also makes lying on your stomach impossible, most spas will simply raise the top of the bed if you're having a facial, while others have special beds, pillows and positions to safely accommodate you during a massage.

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