Some good points for exercise hiit etc.
Anaerobic alactic training- 5 to 10 seconds of 100% output, 2 minute rest: fuel: meat, amino acids- amino acids from meat are converted by the liver, kidneys and pancreas into creatine phosphate where through the catalytic activity known as creatine kinase produces ATP. Once the atp is used up within the 10ish seconds phosphocreatine is then used to reform atp in the muscle again.
Anaerobic lactic system-10 to 60 seconds of output. Fuel:carbohydrates-This exercise causes glycolisis where Glycogen particles in muscle are freed during during the anaerobic activity and then oxidized to produce pyruvic acid,
When lacking oxygen this will then ferment and create lactic acid, this lactic acid is your cells energy source during training.
Aerobic training-fuel: carbs/protein/oxygen-3 mins+ of out put where glucose and oxygen react to create atp.