Sienna Cryo, a cryotherapy clinic, opened March 25 at 4340 Sienna Parkway, Missouri City. Cryotherapy entails using extremely cold temperatures—reaching -220 degrees Fahrenheit—to elicit physiological responses from their body, including increased productions of endorphins and collagen. The clinic also offers compression therapy and low-level light therapy. Clients may visit Sienna Cryo to improve blood circulation and joint function, enhance skin care, reduce muscle inflammation and soreness, and alleviate symptoms associated with disorders such as arthritis and osteoporosis.  281-915-5945. www.siennacryo.com