He was pork chop and gravied to death
https://www.nycpba.org/media/21575/181206.pdf
"...the cause of Mr. Garner’s death was not ‘police brutality’ or negligence, but rather the unfortunate synergy between his disease of morbid obesity and actions most police perform countless times with only transient discomfort to the arrestee......Mr. Garner’s demise was the consequence of a confluence of many factors, most of which were beyond the ken of a policeman, and which occurred in devastatingly rapid sequence.... “The chokehold was ineffective as a control, but served to take him [Garner] to the ground by leverage.....
.....A normal and healthy male would have been transiently distressed by the actions of the arresting officers. Mr. Garner had no margin of safety, no reserve at all, and was precariously unstable even before he was accosted. The actions of the arresting officers, undoubtedly used many times before without significant ill effect, combined with Garner’s pathophysiology to rapidly produce hypoxia, very likely aggravated by carbon dioxide retention and narcosis, which suppresses the normal reflex to breathe. This was rapidly followed by cardiac arrhythmia and death.”
s, G. Wesley Clark, MD