So are those knees hurting a little more since you've gotten serious about getting in shape or since you've been training for that marathon?   Here is an incredible help for any joint discomfort plus a great overall health booster.  Try Zeacaps from Viatalife Networks!  Zeacaps is the original nature source of Mucopolysaccharides and chondroitin sulfates, which help stimulate immune function and slow down joint deterioration.  It contains A, B Complex, D and E, multi minerals, high quality protein and all essential amino acids.  WOW!  Additionally, Zeacaps contain Omega-3 oils.  All of this help support the heart, lungs, joints, muscles, hair, skin, nails and connective tissues for active people of all ages.  I find this product to be particularly helpful on my knees and for my skin and nails.  I was a hurdler in high school and still have some stiffness in my left knee.  When I take the Zeacaps, I don't have pain in my knee at all and I notice that my finger nails and hair look their best. 

 One more great thing about the Zeacaps, they are not from shark sources (which can be a danger of mercury) and they are not bovine sourced (a potential "mad cow" disease problem).