I have a 3 year old Russian male and lately his behavior has been a little unusual. He has been about ten times more active as usual. As soon as he gets into the yard, he just keeps going and won't stop. Normally he just kind of hangs out and enjoys the sun. He has been doing this for over a week. We don't know if this time of year tortoises are generally more active or what the deal is. He just seems to have this burst of energy that is lasting a long time. Is this normal for tortoises or is there a reason for this behavior?