"The best ab exercise is 5 sets of Stop Eating So Much Crap" - Perfect gift for personal trainer, dietician, or anybody watching their diet! To use your Hydr-8 water bottle with preprinted tracking times, simply fill your water bottle to the top each morning. Drink enough water to meet each time mark as the day progresses. Aim to drink enough water to meet the next time increment measurement on the side of your water bottle. By 2:00pm you will fill up your Hydr-8 water bottle a second time. Keep hitting your time goals and you will get your 8 glasses every day! This Hydr-8 Bottle is perfect for those who want to drink enough water but are always on the go! The water bottles fit perfectly in car cup holders, treadmill or exercise equipment cup holders, or in the side pocket of your backpack or bag. They are our most portable option ever! Start today. Drink to your health! ***BPA Free and dishwasher safe***