The cause: tendonitis, which occurs when the tendons connecting your kneecap to the shinbone become inflamed due to repeated stress and overuse.

- The journal Neuron reported in March 2012 on a study showing how repeated stress damages the brain and pointing to ways to prevent such damage from occurring.

This contrasts with certain hard, thin slicing knives, which should not be used for crushing because they can crack under such repeated stress.

It is caused by "unusual or repeated stress" and also heavy continuous weight on the ankle or leg.

Your Answer: Correct Answer: Runners are particularly prone to injury because running is a weight-bearing exercise with repeated stress.

However, in terms of turning on certain genes and affecting their neurotransmitter systems, some of those changes only occur with the more repeated stress.

Fragility testing can be useful to assess cells' ability (or lack thereof) to withstand sustained or repeated stress.

A repeated stress upon the benefits brought by diversity is a recurrent theme of the Council documents.

Plantar fasciitis is the result of repeated stress on the foot that may be caused by normal aging or being overweight.

The hippocampus is vulnerable to repeated stress due to adrenal steroid stress hormones.