Table 6.

Participant feedback upon study completion.

Participant No.	Qualitative Feedback Highlights
1	‘Sleep is improved’
	‘I’m Enjoying the exercise, it’s easier and more instinctive over time’
2	‘Would continue doing the breathing exercises’
	‘Feel more relaxed’
	‘Helped me get to sleep at night’
	‘Would do the exercises at work when my heart was going’
	‘Helps to control my panic’
3	‘Technology was user friendly’
	‘Improves sleep’
4	‘Huge improvement in fatigue levels, not got the same levels of fatigue anymore’
	‘No longer crashing’
	‘Able to start trying to go to work’
	‘The breathing exercises make me feel like I can cope with my situation and give me confidence in addressing my fatigue’
5	‘Helps when I get palpitations or if I’m struggling to sleep’
	‘I do the breathing exercises when I’m getting stressed’
	‘I don’t wake up stressed as much anymore’
	‘I will carry on doing the breathing exercises, even if I get better, I will always do them’
7	‘Equipment was straightforward to use’
	‘I will keep doing the breathing exercises afterwards’
	‘I found it hard to work it into my morning routine. That’s because I don’t have a very leisurely morning routine’
8	‘I feel a lot better, my fatigue is better, I’m not falling asleep as much, my sleeping patterns has improved’
	‘I’m feeling a lot more positive, I’m able to enjoy work and do my job again’
	‘I feel like I'm back to what I was pre covid’
10	‘I feel massively better, it helps me manage my trigger of stress’
	‘Physically a lot better now, I can think about doing exercise again’
11	‘I do have some more energy’
	‘When I do activity, I am able to do it for a longer period of time’
	‘I found the breathing quite difficult’
13	‘It did help me get to sleep quicker at night’
	‘I found the actual breathing exercises really hard compared to what I’ve done normally’
14	‘Equipment was easy to use’
	‘It definitely helps at nighttime, helped me sleep’