A rule of thumb for #vitaminD absorption is if your shadow is shorter than you are tall, you’re making vitamin D: http://t.co/tOd8iKzgaM
— Vitamin D Council (@VitaminDCouncil) September 3, 2015
Happiness, Health and Self-Inquiry.
Happiness, Health and Self-Inquiry.
A rule of thumb for #vitaminD absorption is if your shadow is shorter than you are tall, you’re making vitamin D: http://t.co/tOd8iKzgaM
— Vitamin D Council (@VitaminDCouncil) September 3, 2015