I want to go jogging with my M3 and Wetzlar  50 f/2 Summicron (circa 1970 something). 
 
Is there any reason that I should not?
 
 
 
OR Does my daily walking about and bike riding pose as great a danger to the intregrity of the body and lens? And I should there not even worry about increased potential of damage.
 
Please advise. I truly dislike little PS both Leica and Contax because I cannot confirm control the framing,focus and shutter speeds.
 
THANKS for you time and answers.
	
		
			
		
		
	
				
			Is there any reason that I should not?
OR Does my daily walking about and bike riding pose as great a danger to the intregrity of the body and lens? And I should there not even worry about increased potential of damage.
Please advise. I truly dislike little PS both Leica and Contax because I cannot confirm control the framing,focus and shutter speeds.
THANKS for you time and answers.
