Along with mobility and strength exercises, it's a good idea to do some flexibility work on a regular basis, especially as the season progresses and you start increasing your training mileage. Yoga is a great option—variations of hip openers and other poses can really help the overall function of your hips. Here are a couple of stretches that you can do to help stretch your hips:
Optimal function of your hip muscles is important to all aspects of quality of life, not just riding. By incorporating some foundational strength exercises along with supplementary exercises and mobility/flexibility movements shown here, your can keep your hips healthy and strong on the bike and off. Have fun and good luck!
More: 3 Ways to Improve Your Cycling Away From the Bike
Ready to ride? Search for a cycling event