Avicenna - The Canon of Medicine - On the elderly
Type of spiritual experience
Avicenna wrote a complete chapter titled "Concerning the Elderly" in the Qanun, and states the same regimen for them, as he does for others. He states on page 433...........
A description of the experience
Avicenna (1999). The Canon of Medicine (al-Qānūn fī'l-ṭibb), vol. 1. Laleh Bakhtiar (ed.), Oskar Cameron Gruner (trans.), Mazhar H. Shah (trans.). Great Books of the Islamic World
For if, towards the end of life, the body is still equable, it will be right to allow attempered exercises. If one part of the body should not be in a first-rate condition, then that part should not be exercised until the others have been exercised. ... On the other hand, if the ailment were in the feet, then the exercise should employ the upper limbs: for instance, rowing, throwing weights, lifting weights.