I am 47 yrs old, 5 feet tall, 110 lbs and a competing member of the US Masters diving team, so I have great flexibility and good overall health though I smoke about 10- 15 cigarettes per day. I just returned from a trip out west with various weather ( 110 in Vegas, but snowing in Bryce Canyon Utah, and about 85 in Page Arizona. I was active, but not over active. For 2-3 days I have been experiencing back, rib & leg cramping, & it became severe today after I returned to Philadelphia. Could this be from dehydration?