Estimating your sweat rate can be useful when working out how much and what type of fluid (water or electrolytes) you need to drink in training and in races. All you will need to establish an estimate is an accurate set of weighing scales and a drying towel. ...
There are two additional scales dial side at 10 o’clock and 2 o’clock from which the watch takes its name. The first tracks the distance the Earth covers as it spins through the void at roughly 1665 km/h. Try not to think about that too hard. Otherwise, it’s hard to find fault...