If you know that an individual (72kg) has a side job mowing lawns and they do it 10 hours a week, then how many kilo-calories are expended each week doing this activity?

[(METSx3.5xbody-weight inkg)/200=kcal/min

To calculate the number of kilo-calories expended each week by an individual mowing lawns, you need to use the formula:

[(METS x 3.5 x body-weight in kg) / 200] = kcal/min

Let's break down the formula and plug in the given information:

1. METS (Metabolic Equivalent of Task):
METS is a measure that represents the energy expended during various activities. The METS value for mowing lawns is typically around 3.9.

2. 3.5:
3.5 represents the amount of oxygen consumed per minute per kilogram of body weight when at rest (1 MET).

3. Body weight in kg:
The given information states that the individual weighs 72 kg.

Now, let's calculate the kilo-calories expended per minute:

[(3.9 x 3.5 x 72) / 200] = kcal/min

Multiply the METS value (3.9) by 3.5 (to account for the oxygen consumption at rest), and then multiply it by the body weight in kg (72). Finally, divide the result by 200.

The resulting value will provide the number of kilo-calories expended per minute while mowing lawns. To find the number of kilo-calories expended each week, multiply this value by the number of minutes spent mowing lawns per week.

For example, if the individual mows lawns for 10 hours (or 600 minutes) per week:

(kcal/min) x (minutes per week) = kilo-calories expended per week

Let's calculate the kilo-calories expended each week:

(kcal/min) x 600 = kilo-calories expended per week