Being the closest planet to the sun, Mercury probably isn’t the first choice for human colonization. With the most extreme temperature fluctuations in the Solar System, temperatures can go from a high of 430 °C during the day to a low of -180°C at night. Given that a year on Mercury is only 88 Earth days, your age in Mercury years is about 4 times your age in Earth years. (https://go.nasa.gov/386lljk)