I say add some strength training into your routine. Muscle training will help increase bone density and also burn calories even when you're not training. In fact I say strength training is even better for weight loss. Eat healthy with a choice amount of greens, clean proteins and a good amount of complex carbohydrates. In fact I rotate strength and cycle training. This way even though you're resting for cycling, you're able to train your muscle groups. When you go ride your bike, you focus more on cardio and your muscles take a break. I've seen studies that even mild strength exercises can help towards the older years. Plus don't over do it. If your body tells you to take it easy that day, go on a nice walk instead!