Your brain is dependent on water. It contains 75% water but is incapable of storing it.
Therefore, your conscious function, including long- and short-term memory retention, requires a steady supply of water.
Obviously, when you think of concentration, coffee comes to mind.
The addition of a little lemon enhances not only the flavour but also the cognitive function.
Particularly if you dislike coffee, peppermint tea is ideal. The absence of caffeine has no effect on this beverage's ability to keep you alert!
Similar to other root vegetables, beets are rich in dietary nitrates. which increases blood flow and oxygen to the brain.
The stimulating effect of coffee's caffeine makes it easier to focus on your work.
Caffeine is especially helpful if exhaustion is interfering with your concentration.
Tea contains the same amount of caffeine as a cup of coffee, as well as antioxidants and polyphenols that promote concentration.