Stamina" is the strength and energy needed to exert oneself for an extended period of time.
Tips to increase stamina:-
1.Eat a healthy, balanced diet. Food is the fuel your body gets its energy from. A healthy, well-balanced diet keeps your body healthy and energized, raising your stamina. Try to eat a well-balanced, low-fat diet that includes plenty of fruits, vegetables and lean meats. For long-lasting energy, having up to a third of your diet be composed of starches and carbohydrates (whole wheat varieties are preferable. To keep your body steadily supplied with energy throughout get energy by eating several smaller meals throughout the day rather than one or two large meals. Snack on fruits, raw vegetables, nuts and other lean proteins between meals. Carry high-energy fruit and nut mixes with you during times of extended performance, such as hiking, cycling or cramming for final exams.
2.Stay hydrated. The health benefits of drinking lots of water are numerous - it can help you lose weight, prevent kidney stones, and much more. Water can also increase stamina by fighting muscle fatigue. Muscle tissue that is under-hydrated can under-perform, so keep your stamina up by drinking about 17 ounces of water a few hours before strenuous exercise.
If you're starting on a long distance run or an extended exercise, have plenty of fluids with you so they'll be available if you get thirsty later.
3.Get plenty of physical exercise. Though it will tire you out in the short term, physical exercise increases your overall energy level and stamina over a long period of time. For optimal health and increased stamina, make time in your schedule for regular exercise. For adults, the Department of Health and Human Services recommends at least 150 minutes of moderate cardiovascular exercise per week (or 75 minutes of intense cardiovascular exercise), along with strength-building exercise sessions at least twice a week.
4.sleep 7-8 hrs
5.quit smoking and alcohol
, go for constitutional homoeopathic treatment for complete cure.