Want the flexibility of yoga, the cardio intensity of aerobics, and the stress-reducing benefits of a spa? Then hot yoga might be for you. With specialized postures and breathing exercises, this form of yoga is designed to develop strength and endurance while enhancing mind-body well-being. Some things you should know:

• Before you sign up, get the green light from your healthcare provider. If you have high or low blood pressure, heart disease, or diabetes, you may need a different form of yoga.

• Classes are usually 90 minutes and held in a heated room: 95°–105° F with 40% humidity. Be prepared to sweat.

• The postures — called asanas — may be modified to suit different skill levels. Each asana (about 26/session) is held for 10–60 seconds.

• Special breathing techniques will help you maintain focus and cope with the heat.

• You’ll need to invest in a yoga mat and towels. Wear loose–fitting, moisture–wicking clothing, and drink plenty of fluids 30–60 minutes before you begin a class.