My husband is 54, stage IV and NED on Keytruda for 22 months now. He's an active guy, works long hours some days and walks regularly. He's mostly been able to keep up his regular routine. He does have off days with fatigue and overall aches. For a long time he seemed to have an ongoing cough/mild cold but that resolved. I agree with another poster that if you are already active there's a good chance you can keep that up, just understand there may be some more down days than you're used to. I wish you all the best.
