Michelle F Hello Thanks for your note and wonderful feedback :) A good self check Do the sounds  also accompany pain?  If the answer is yes, then I would dial your range of movement back to a point that does not bring pain and perhaps discuss your range of movement challenges with a doctor or physical therapist.  If the answer is no, its very likely that (from an Ayurvedic perspective) you have alot of "Vata"- or air element in your body.  Popping and clicking sounds coming from the joints can be indicative of a vata imbalance.  If the movements don't bring pain then it could be just air releasing from the joints. Vata imbalances can manifest in issues w/the joints, bones and the colon. Some foods that can help Vata re-balance are: grounding root vegetables, oily foods like avocado, spices like, pepper, cardamon, cinnamon, fennel & tumeric... 

Michelle F ..Foods that taste sweet and sour are ok, but reduce exposure to pungent, bitter and astringent tastes.  Also a good all around helper is to drink 60-80 oz of water daily, too. All that said, its always best to consult a doctor and perhaps consider speaking to an Ayurvedic specialist who can help you apply gentle and practical diet and lifestyle adjustments to stabilize any imbalances in your doshas.