August in New Orleans does not negotiate. Walk Michael through one hot day and keep his water line where it belongs: raised by many small deposits, not one heroic chug.
PHOTO
Michael swears he drinks plenty. Most days the first real glass shows up after his second coffee, and by 3 PM he is dragging and blaming his lunch.
VIDEO
No universal ounces rule here. Real needs vary by body, heat, and how much you move (National Academies), so this game uses plain marks: Michael's day starts at 8, and heat can raise it. The marks are teaching units, not a prescription.
Michael's day
0%0 of 8 marks today
Dotted line: about a third of the day before the afternoon heat.
Tap + Water to log a glass onto the timeline. Each one lifts the line. Tap a glass to take it back off. Nothing moves unless you move it.
Morning
Midday
Afternoon
Evening
Nice morning work. The line cleared a third before lunch.
Event
Michael spent an hour outside in the August heat.
−2 marks · today's need is now 10
Sweat is a withdrawal. In heat it commonly runs 0.5 to 2 liters an hour and varies a lot from person to person (ACSM position stand, 2007). Replace what the heat took, then keep building.
The line is climbing back.
Event
3 PM. Michael wants his afternoon coffee. What does the cup do to the line?