Been practicing this habit for a few weeks now and thought I'd share why I started! I just pour hot water in a mug and squeeze about 1/2 a lemon in! Lemon juice would work too! Don't over think it. One thing to keep in mind: lemon is acidic and can wear on tooth enamel, so always follow your warm lemon water with a rinse!
Last week I slacked a few mornings and I definitely felt more sluggish & could tell a difference in my digestive system. The following info is paraphrased from a 2019 article via @wellnessmama
Drinking any water, especially warm water, first thing in the morning can help flush the digestive system and rehydrate the body
The liver is extremely active during sleep since this is the body’s time to restore and regenerate. Drinking enough water, especially in the morning, helps make sure that the body can perform these jobs most effectively. There is even some evidence that lemon juice can help stimulate proper stomach acid production and bile production.
Immune System Boost From Vitamin C
One lemon contains about 30-50 milligrams of vitamin C & they also contain potassium
By helping flush the body & improve digestion, lemon water can lead to clearer skin. The vitamin C it contains is needed for collagen production which aids in smooth, healthy skin
There is evidence that drinking water, especially lemon water, first thing in the morning can help maintain a healthy weight. One study from Germany found that drinking enough water increased metabolism in the test group. "After drinking approximately 17 ounces of water, the subjects’ metabolic rates — or the rate at which calories are burned — increased by 30% for both men and women. The increases occurred within 10 minutes of water consumption and reached a maximum after about 30 to 40 minutes."