New doodle aches & pains

I'm wondering if alot of new doodle owners start to have new muscle pains, like i'm now experiencing. I used to do alot more running last year (plus yoga stretches) , but now i think walking 2 doodles , and holding them back (usually) and run/walking forward has started to work (wreck) different muscles of mine. Should i do any special Pre doodle walking streches? Feeling twice my age here-