Now it is established in the sciences that no knowledge is acquired save through the study of its causes and beginnings, if it has had causes and beginnings; nor completed except by knowledge of its accidents and accompanying essentials.

On pages 379–381; Ibn Sina states the types of exercises under each type:

There are certain important things to note once you start exercising one is the amount the other consistency; Ibn Sina states about the amount:

On being consistent with exercise Ibn Sina states (on the importance of having a regimen):

On the side note those who think themselves to be elderly and thus think of shunning exercise Ibn Sina write a complete chapter titled "Concerning the Elderly" in the Qanun and states the same regimen for them as he does for others. Avicenna argued that the impossible being is that which cannot exist while the contingent in itself (mumkin bi-dhatihi) has the potentiality to be or not to be without entailing a contradiction. [citation needed] On his deathbed remorse seized him; he bestowed his goods on the poor restored unjust gains freed his slaves and read through the Qur'an every three days until his death.

His corpus also includes writing on philosophy astronomy alchemy geology psychology Islamic theology logic mathematics physics as well as poetry. Ibn Sīnā's Canon of Medicine provides a complete system of medicine according to the principles of Galen (and Hippocrates).