About the Mammut Liquid Chalk
Liquid chalk is a great alternative to powder chalk. It creates less dust when climbing indoors, so it's nicer on your lungs and doesn't leave chalky deposits on the rock when climbing outdoors, so better for the environment! It also lasts a long time, more than long enough to do a pitch, so you spend less time and strength, hanging around chalking up, giving you a slightly greater chance of topping out (every bit helps, right?).
Although this is designed for rock climbers, it can also be used for gymnastics, weightlifting, yoga, athletics and even pole dancing!