Very important, do not become 'inactive' sometimes, some of us, as we age we tend to think deep inside 'aw I shouldn't be doing that now at my age' because of the exertion involved therein we have planted a negative seed into our subconscious & we become 'stuck in mind & therefore stuck in body!'
One of the most vital areas for mobility as we age is 'stretching' will keep, (or help) us to be mobile by aiding in joint lubrication loss, muscles are warm invigorated with fresh oxygen filled blood whilst stretched out the tight/tension, aiding in flexibility, & just as importantly stretching tones our muscles helping to keep our body more youthful & stronger whilst aiding releasing appropriate happy good feelings once generated from the brain. Good feel factor.
Stretching is so easy nearly anyone can do it no matter what level of fitness your never too late to start & you can even start alone in your own home.
I love stretching lol