Freshly squeezed juices are one of the best sources of vitamins and minerals that reach your blood stream within seconds. Have the one below to increase your energy and stamina: 

Carrots, beetroot, garlic and ginseng (powder or drops) 
Carrot: The juice gives an instant pick-me-up feeling while providing you with lasting energy for your workout. High levels of beta-carotene - an antioxidant that may help oxygenate the blood, brain and body tissues.  

Ginseng: Adding 1 teaspoon of Ginseng powder will increase some strength, energy and stamina for their workout too.