Answer:
I would say stretching everyday. That is what makes more sense to me, but I could be incorrect.
Explanation:
If a person wasn't doing much physical activity before, I doubt they could just get up and do things two - four times a week. But, I also don't know your material.
There's many options for this but what i have found is the best source for your calcium is yogurt it helps in many ways.
1)30% of your calcium
2)20% of vitamin D
other options-
milk, cheese, eggs, salmon, and spinach
