coffee contains caffeine which leads to higher adrenaline levels which stimulates energy production and thereby improves blood flow to the muscles and the heart

 caffeine can regulate  fatigue and influence ratings of exertion, perceived pain and energy levels, which to lead to improvement in performance.

caffeine has ability  to improve physical performance during aerobic exercise and to restore mental performance when we feel tired .
having a cup of coffee about 20-30 minutes before workout allow us to exercise for up to 30 percent longer. The most notable impact of caffeine on performance is in sports such as swimming, cycling and tennis.

Moderate coffee intake help to increase alertness and concentration . Caffeine becomes popular for its stimulating effects ,which have many  benefits for mental performance. 

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