Don't let the Doctor's grey hair fool youhe still has enough energy for three people. Upon waking from his post-regeneration nap, he commenced climbing out of windows, falling out of trees, and riding horses through the streets of London. Not too shabby for those who were worried about the decreased physicality of an older Doctor. No, the Doctor's older appearance does not mean he can't still run with the best of them. In fact, I daresay his companions will probably find it difficult to keep up with him! The fact that the Doctor can still find the energy to dash about time and space in his usual haphazard way is good; it's a sign that his 2,000+ years of life haven't slowed him down or caused him to lose interest. If anything, it's fueled both his interest and energy. They say that age is just a number, and judging by the way the Doctor continues his gallivanting, he obviously believes this.
Paula Luther hails from Pennsylvania and has been an avid Whovian since 2008. She enjoys writing (obviously), reading, dancing, video editing, and building websites. She has also self-published two books on Amazon, "Bart the Bard" and "Android Mae and Other Stories".