Originally Posted by
cubewheels
You still need to brake if approaching a sharp turn.
Squeezing the top tube with your knees or hips is a very good start, followed by relaxed grip on the handlebar (using your core muscles to support your upperbody weight), and finally, putting more weight on the front wheel by crouching down real low.
You may also need to do some adjustments to the seat to help relieve some pressure off your arms to help you hold the handlebar with less pressure.
Another response that seems to help is taking weight off the saddle, onto feet as well as upper body. Not out of the saddle, just less weight.