Ask Rip #47: Oh boy.

[Giri Kotte]

I don't know for sure that the acid in the tomatoes is the problem.

pH of tomatoes is in the same ball park as of ascorbic acid and higher than that of soda. Given, both ascorbic acid and soda alleviate acidity, it's might be something other than the acid content.

[Mark D]

Would a hypothetical shoe with a sole that's higher at the toes and lower at the heel help people with relatively longer femurs reduce the excessive forward travel of the knees in a squat?

Those of us who remember the 1970s are recalling Exersoles by Thom McCann.

[Mark E. Hurling]

Those of us who remember the 1970s are recalling Exersoles by Thom McCann.

Oooo-oooo! Or Earth Shoes with the "negative" heels. Owned a pair.