I am a casual rider preparing for a 40 mile Diabeties Bike A Thon at the end of April. Knowing that I would still have to "tweak" things later, I just spent 2 days taking 1 mile rides and making minor bike adjustments. Everything felt ok so I went for my 1st, 5 mile ride today and both hands and arms went numb.

I was riding with both palms on top of the handlebars, after about 2 miles, gradually both hands and then both arms started to go numb, like maybe I was putting too much weight on them.

HELP !!! Are there any suggestions out there on what adjustments I should make first. Thanks for any advice.