According to Dr. Oz, varicose and spider veins are the result of a similar process that involves how well blood travels through the venous system from the lower legs back to the heart.
Baby rabbits stay with their mothers until about 10-12 weeks, this is when they are able to move around quicker, avoid predators, and forage on their own. In the wild they should start adventuring out of the nest at 5 or 6 weeks to start learning from mom. At least 6 weeks.
It is best to handle the babies as little as possible until they are old enough to leave the nest box on their own. If your concerns begin on the day of the birth, wait a day before attempting to do anything. Some mother rabbits do not feed their babies until the evening of the first day or early on the second day. If it has been close to two days and you are positive that the babies have not been fed, a veterinarian must be seen immediately.