Table 1.

Classification system developed based on statements from the transcribed interviews with examples.

Classification	Examples
(1) Actions (16)
Cognitive (16)	I try to focus on the here and now (P001)
Bodily (14)	I was mainly focused on my breathing (P009)
(2) Percepts (16)
Emotion/mood/feeling (13)	I was excited (P021)
	I was getting really annoyed (P017)
Embodiment (9)	Something inside my stomach (P011)
Other senses (10)	Auditory: I was aware of the sounds of the beeps (P004)
	Visual: I could see myself as if somebody’s looking at me (P009)
Cognitive (8)	I ran out of things to think (P010)
	Sometimes things just pop in and it just gets messy again (P006)
(3) Executive (14)
Change in actions (3)	I switched to doing math in my head (P002)
Change in percepts (1)	I kind of forgot I was in the chair (P013)
Evaluative (12)	I wouldn’t say not caring, but not minding whether the bar was moved actually seems to be more effective (P015)
Goal-directedness (2)	I was conditioning myself to push on (P005)

The number of participants (out of 16) that provided statements for that (subclass) is given in brackets. The code after each example statement refers to the participant that provided that particular statement.