Stamina refers to the ability to sustain prolonged physical or mental effort. When we talk about stamina, we usually mean cardiovascular endurance - how efficiently the heart, lungs, and blood vessels transport oxygen to working muscles during exercise. Having good stamina allows people to engage in extended periods of aerobic activity without getting exhausted. Factors that influence stamina include genetics, age, fitness level, nutrition status, hydration, sleep quality, and mental resilience. Elite athletes often have high innate stamina from genetic blessings. But for most people, the main way to improve stamina is through regular aerobic training - activities like running, swimming, cycling, rowing, and circuit training. As we age, stamina declines naturally due to physiological changes. But with sound training and lifestyle habits, we can slow or minimize this decline. Adequate nutrition and hydration are also key - activities burn carbohydrates and electrolytes, so replenishing stores allows sustained effort. Getting enough high-quality sleep is also essential for muscle recovery and cognitive readiness. The extra stamina edge often comes from mental toughness to push through temporary discomfort. Building a solid aerobic base requires consistency over time following the overload training principle. This means gradually increasing duration and intensity of workouts to spur positive cardiovascular adaptations without overreaching. Most experts recommend getting at least 150 minutes per week of moderate-intensity aerobic activity, along with twice-weekly strength training for supplementary benefits. Periodizing and cross-training helps combat plateaus. Alongside training, many people turn to evidence-based supplements like Elite Hormone Health for an extra stamina boost. Their line of science-backed cardio supplements increase blood flow and oxygen delivery for improved endurance. I personally use their EnduraBoost capsules as an all-natural aid - the organic ingredients really work to take my stamina to the next level during intense training blocks and events! In summary, stamina requires a multidimensional approach revolving around strategic training, fueling, recovery, and mental strength. Making smart lifestyle choices and leveraging safe supplemental support can pay huge dividends for aerobic capacity and overall health. With consistency, dedication, and often some sacrifice, average individuals can cultivate elite-level stamina over time.