There are health issues to fear but I really believe getting out of the house is always healthier. Walking and doing at any age is always best. I love to walk and can walk several miles easily.
I love how Rolf Potts put it in his book Vagabonding - Never underestimate your ability to learn and adapt quickly - and don't waste your time fretting about every possibility that might come your way on the road. Again, simple courage is worth far more than detailed logistics, and a confident, positive, ready-to-learn attitude will make for any travel savvy you lack at the outset. With such an attitude, most people find themselves brimming with confidence after their first few days of vagabonding - and kicking themselves for not having mustered the courage to do it years ago. (Chapter 4)
This picture was taken when my husband took me to see the sunrise on the beach in 2006.