Quick Answer. Inner thigh cramps can be caused by straining or overusing a muscle; deficiencies of dietary minerals such as calcium; insufficient blood circulation in the muscles; and dehydration, according to MedlinePlus. Extended periods of intense exercise and physical labor can cause muscle cramps throughout the body, notes Mayo Clinic.
Main article: The World's Billionaires 2015. Bill Gates was named the richest man in the world by Forbes Magazine's annual list of the world's billionaires. This was the 16th time that the founder of Microsoft claimed the top spot. Carlos Slim came in second for the second consecutive time. Warren Buffett of Berkshire Hathaway was placed third, while Amancio Ortega of Spain, slipped down a position from last year to number four. Larry Ellison, the founder of Oracle rounded off the top five.
On the 30th anniversary of the Forbes' list of the world's billionaires, for the fourth year in a row, Bill Gates was named the richest man in the world. The number of billionaires increased 13% to 2,043 from 1,810 in 2016; this is the biggest change in over 30 years of tracking billionaires globally.