hello there, I have only been ridding for about 4 weeks, my wrist are killing me. What i am doing wrong, or is something not properly adjusted i.e height of saddle / bars
Get fitted properly. The number one reason for pain while cycling is bike fit. You'll probably need to set the seat further back and replace the stem with one that has a higher rise, but if you take it to a bike shop, they'll be able to set you up nicely.
An Army of Fred
I had the same problem after I had a slight disagreement with the right rear quarter panel of a Chevette (broken wrist). For years, I couldn't ride my hybrid (flat bars) without pain. A couple years ago, by wife talked me into taking yoga classes with her. After that, and turning my brake levers a little further down than stock so my wrists are straight rather than bent, I no longer have issues.
The yoga exercises that seemed to really help my wrists were Downward Facing Dog, Plank, Chaturanga, and Upward Facing Dog.
Owner/operator of Fredkenstein™ I
You know all that money we spend on nuclear weapons and defense each year, trillions of dollars, correct? Instead -- just play with this -- if we spent that money feeding and clothing the poor of the world -- and it would pay for it many times over, not one human being excluded -- we can explore space together, both inner and outer, forever in peace. Thank you very much -- Bill Hicks