What does "ponte las pilas" mean? anybody? my friend told that to me in spanish but i don't know what it means. ?

so is this an essay or something?

daylight saving time (dst) has been used for more than 100 years. changing the clocks does not create extra daylight, but it causes the sun to rise and set at a one of the aims of dst is to make sure that people's active hours coincide with a german analysis of 44 studies on energy use and dst found a positive