As a life long sufferer of hip conditions, warm up thoroughly.
Spend five extra minutes on your hips, rotate them both clockwise and anti clockwise - do light glute bridges, pigeon stretch and frog stretch. Reaaally make sure to take the time with them, your joints are the first thing to go when it comes to injuries.
Can you get into old age without hip problems? Probably not, but a 70 year old karate masters hips are probably in better shape than a 30 year old couch potatos even if they do experience more pain as a result of living a more active life style