Lactic acid or am I just getting old?

614172

{"text":"I do a lot of walking in my job. It is very physical also. I am a heavy smoker too.\nWhen the weekend rolls around, all day Saturday my joints are stiff, walking is difficult.\nIs this a lactic acid build up or am I just getting old? \nThey say, when you rest you rust!","pics":"[]","canComment":true}