Economists, traders, and investors take into account a myriad of factors when assessing financial decisions. What happens, biologically, when they make these decisions? A day of risks begins with metabolism and breathing patterns that speed up. This is followed by a surge of energy due to steroid hormones synthesizing, causing heightened mood and alertness. The hormone levels can climb for several hours and they eventually trigger the stress hormones, adrenaline and cortisol. Depending on the level of adrenaline in the system, this can have a pleasurable or an uncomfortable effect on the body. Eventually, without further stimulation, the body winds down.Read the entire article here: The Biology of Bubble and Crash.