Almost the entire world is suffering from blistering heatwaves. From the United States to India and Saudi Arabia, temperatures are soaring with fatal consequences. At least 100 people have died in India with over 40,000 suspected case of heatstroke between March 1 – June 18, according to the health ministry data. India’s capital Delhi recorded a minimum night temperature of 35.2 degrees Celsius, the warmest night the capital has recorded since June 2010. As many as 1,126 people are reported to have died during the Hajj pilgrimage this month in Saudi Arabia where temperatures soared above 50 degrees Celsius last week.Here’s a look at what happens inside the human body when temperatures hit extreme levels. Watch!