Calculate how much water you need to drink every day

water_metabolism.py

def water_metabolism(
    activity_level: float,  # 1.5: static, 1.75: intermediate, 2: dynamic
    weight: float,  # in kgs
    gender: int,  # 0: female, 1: male
    humidity: int = 50,  # in percent, e.g. 50
    is_athlete: int = 0,  # 0: not athlete, 1: athlete
    hdi: int = 0,  # 0: developed countries, 1: intermediate, 2: developing countries
    above_sea_level: float = 25,  # in metres
    age: float = 30, # your current age
    temperature: float = 15,  # average daily temperature in celsius, e.g. 15
) -> float:
    # ref: https://www3.nhk.or.jp/news/html/20221125/k10013902711000.html
    return (
        1076 * activity_level
        + 14.34 * weight
        + 374.9 * gender
        + 5.823 * humidity
        + 1070 * is_athlete
        + 104.6 * hdi
        + 0.4726 * above_sea_level
        - 0.3529 * age**2
        + 24.78 * age
        + 1.865 * temperature**2
        - 19.66 * temperature
        - 713.1
    )