(1) There are a number of possible reasons for muscles to cramp up.

(2) Heart muscle may cramp when it needs more oxygen because of exertion, emotion, or exposure to cold.

(3) I've been sitting in this position for a good 2 1/2 hours and my muscles are starting to cramp up.

(4) An attack of cramp

(5) Tighter rules will cramp economic growth

(6) Cramp the gates to the posts

(7) In most cases, the cramp occurs as a result of repetitive exercise.

(8) The runner suffers severe muscle pain and cramp as well as crippling abdominal discomfort.

(9) If you get up early enough, you can probably travel at least 300 miles per day but don't cramp yourself with time limits.

(10) She opened and closed her hands to relieve the cramp that was building in them.

(11) What if his muscles started to cramp due to a lack of warm-up exercise?

(12) I rub her back, rock back and forth, murmur soothing nothings against her hair until the cramp subsides.

(13) Fortunately, the problem only proved to be cramp in both calves.

(14) Heat exhaustion may have been complicated in Radcliffe's case by heat cramp .

(15) Why do our legs cramp up as we're waking up?

(16) She'd been holding this thing within her for so long her muscles were cramping .

(17) Such hormones are often prescribed for painful menstrual cramps and ovarian cysts, among other problems.

(18) Naprelan is a non-steroidal, anti-inflammatory drug used to relieve mild to moderate pain and menstrual cramps .

(19) Ibuprofen is helpful for menstrual cramps and pain from inflammation (such as muscle sprains).

(20) The overall effect is handsome without cramping the action.