Drinking warm lemon water in the morning is a healthy ritual for obvious reasons.
Lemons are rich in limonoids, phytochemicals that have been shown to help fight cancers of the mouth, skin, lung, breast, stomach and colon. (source)
Limes and lemons also contain the highest amount of citric acid (not to be confused with vitamin C), which prevents kidney stone formation as well as breaks up small stones that are beginning to form. (source)
Lemons Prevent Kidney Stones
Just half a cup (4 ounces) of pure lemon juice per day or 32 ounces of prepared lemonade provide about the same amount of citric acid as does pharmacological therapy.
If you buy lemons by the dozens and want to keep them fresh longer, here’s what you can do.
How To Keep Lemons Fresh
Generally, whole lemons become hard and dry within 7 days if you leave them in the open.
The best way to keep your lemons fresh and juicy is to put them in a sealed plastic bag and store them in the fridge.
It’s as simple as that!
In this state, your lemons are able to retain most of its juice and flavor for as long as four weeks (1).
According to the European Food Information Council (EUFIC), the ideal temperature for storing ripe (yellow) lemons is between 4º and 10ºC (39–50ºF). For most refrigerators, the middle shelves or door shelves are around this temperature (2).