What is muscle tone and muscle fatigue? How can it be cured

Would like to know in a short, descriptive answer that I can understand (:

You can 'cure' muscle tone by eating a lot of cakes..
Muscle fatigue is 'cured' by resting the muscle. The only way to increase the time that your muscles can last before getting fatigued is by resistance training that your body will get used to over time. Marathon runners build up to running a marathon slowly so their bodies get used to it.