How to pronounce 體質 in Cantonese (5 out of 6):

咁第一個原因係一d 內在嘅體質
So the first reason is the physical properties of the d.

Cantonese Sentence Breakdown

gam3
so (Cantonese)
Mandarin equivalent: 这样zhèyàng [这样], like this
第一個 dai6 jat1 go3
(adjective) The first one
原因 jyun4 jan1
reason
hai6
(Cantonese) to be
to connect
to relate to
to tie up
to bind
to be (literary)
to involve
relation
relationship
consequence
yes
indeed
right
jat1
one
single
a (article)
as soon as
entire
whole
all
throughout
"one" radical in Chinese characters (Kangxi radical 1)
also pr. [yāo] for greater clarity when spelling out numbers digit by digit
first (positional)
one part of a fraction, such as 'a' quarter, an eighth
a short duration (when used with a verb)
each
same
dedicated
from the start
內在 noi6 zoi6
intrinsic
koi3
indignant
generous
to sigh (with emotion)
體質 tai2 zat1
(noun) (of medicine) Constitution