Fitness fundamentals help you understand how body works and regulates functionsYou would need to know some fitness fundamentals, either if you are new or you are currently working on your fitness. To be in good shape, you need to achieve enough of the following:1. Flexibility 2. Muscle strength 3. Muscle endurance 4. Cardiorespiratory endurance 5. Reasonable body composition
Click here to learn about muscles response to an especific exercise
With adequate stimulus, muscles can grow in size and strength, what is called hypertrophic response, but they can also decrease in size and weaken, being the response called atrophy. This means that deppending on the activity that you develop or exercise you make, your muscles suffer changes.
If you want to achieve a great fitness, remember to keep balance of flexibility, training needed for strenght and endurance, and the aerobic activity important too for the cardiorespiratory part. What are the benefits of weight training? 
How does cardiorespiratory training can help my heart? Cardiorespiratory endurance determines how long a person can remain active with an elevated heart rate. Muscles need abundant oxygen to work and produce energy. Heart and lungs provide that oxygen. Read more about it by clicking the link above. It is well known that training with weight can build and maintain muscle strength and resistance, but some other things are being discovered. Can it prevent and manage chronic diseases, including cardiovascular ones? Does it help to improve posture? Can it maximize and maintain body mass? And if so, how? Could it help to achieve more bone density? What other new benefits have been researched and found? Body needs energy on the activity and duration. How much do you need? The most important fuels for the body come from carbohydrates, fatty acids and proteins. The body mixes them, and according to the intensity and duration of activities they will work in a different way. During rest, body uses more fatty acids, then glucose, then amino acids. During exercise, body adjusts the fuel mix to use more glucose first, then if the activity continues, it calls other molecules to action. For example, if you are a runner, a high fat diet would give you aproximately 57 minutes of endurance time, a high carbohydrate diet instead would give you 167 min. 
How glucose is used and stored How glucose is affected by duration of activity How training influences glycogen use Remember we said that depending on the diet that an athlete eats, he or she will produce certain endurance and will burn more fat or less during exercise. Do you want to control your weight?
If you are willing to build muscles, you would certainly need protein and amino acids for such thing. But body handles protein differently depending if you are resting or active. Learn how to build muscle from protein, how protein is used as a fuel, how the use of it is affected by the intensity and duration of the activity and even how much a protein should an athlete consume. Get on track of how to build muscles Please contact us if you want more information and visit also our blog to great new adds .Go back to other interesting Fitness Articles If you like to learn more about nutrition go through this link
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