Make a Smart Water Bottle

What you need:

• 2 x 50cl plastic bottles
• Masking tape (of different colours)
• Scissors
• Marker

Use masking tape to create 3 graduations on each bottle. This way you will obtain 5 equal volumes of water.

Drink one volume of water per hour.

Use the marker to write the hours of the day. For example from 9am to 5pm.
Your goal is set! You'll see: it's never been easier to drink 1L of water per day!