[header] How to get rid of a belly ache from too much junk food [title] Drink lemon water. [step] The acid in lemon juice can help speed digestion, which can help treat a stomach ache that is the result of eating too much junk food. Simply mix the juice of a lemon with 8-12 ounces of warm water and sip until you start to feel better. 
[substeps] You can also try mixing the lemon juice with regular tea, and it is permissible to add a small amount of honey to help it go down. Just don't add too much honey or you may further upset your stomach.