Have ridden flat bars for 17 years and I did not realise how over the years I have found certain things to help on the Hand numbness and tingling. Moving the hands around BEFORE the pain gets too much helps a lot. Bar ends give different hand positions- Raising the bar (Or maybe lowering for some people) or as I have done- Changing to riser bars may help. Couple of things though- Those trekking bars may look wierd but they Offer a multitude of Hand positions. The thickness of the Bar grip- I always use a fairly thick but firm one made by "Yeti"- and I have small hands. On Gloves- Just because it has gell in them- I will not recommend them. The gell compacts down after a short while and offers no padding to the hand. and also- I have small hands but always buy a Large glove so that nothing restricts circulation in the hand. My hands swell up after a while and if I used a small glove- They would be tight after 10 minutes.
Then as someone else mentioned- Death grip with the hands. I tried it on one ride and it works Don't hold the bar firmly. You still have bar controll and the fingers get better circulation.
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How long was I in the army? Five foot seven.
Spike Milligan