Msgr Pope ping
Good insight there about reading Romans 7-8 as a unit, a single elaboration, instead of separately.
Regarding the spirit/flesh issue, a famous writer about running observed that the flesh - the physical body, in this case - is not weak. It’s strong and eager for vigorous activity. Many of our health problems are caused by insufficient activity. It’s the spirit - the mind, the will - that are lethargic. “Stop nagging me to run, legs! I just want to lie here!”