Premature infants suffer from lack of bone stimulation and joint compression. This puts them at a higher risk of bone fracture. As a result, therapists work in ten-minute sessions, five days a week. But the little babies don’t like the manual manipulation and put up a fuss. This caused pediatric therapist, Barbara Kozol, to invent the “pea pod.” It’s a fleece, snug-fitting pouch, designed to replicate the gentle confines of the womb. This enables the baby to push against resistance, which in turn increases bone density. Instead of annoying therapy, the baby exercises at his or her own choice. The cost is only twenty bucks per pea pod, compared with a therapist who charges more than eighty dollars per session over several weeks. The pod’s being tested in a federally approved study.