Themes	Definitions/Precisions	Extracts
Support	When the family environment is supportive and the youth feels a sense of involvement on their part.	JSÉD2: Super big support from parents [...] for any sport my parents were open: "you want to do sports, well you’re going to do it because it’s good for you".
Stability	A family setting where the environment offers the youth stability leading to the integration of healthy lifestyle habits.	EDG2: If you have a stable environment, and I’m speaking for myself, you have parents who are there to support you and who will always encourage you in what you are [...] that helps you a lot in your personal development as a person, in how you become.
Model	When a young person’s family culture is focused on healthy living and they want to replicate that in their own life.	AED2: My father is a great sportsman, he used to canoe. My mother was also a canoeist, so... I think it’s really the family culture that pushed me to develop healthy habits. JK1: Let’s say when I was a kid, I’m the last one in a family of 4, so I always learned by watching others and then my whole family did sports, like taekwado, field hockey, etc. [...] There was a lot of sport in my family. [...] There was my sister that I always copied a lot.
Diversity	Several possibilities are offered to the young person and he experiments with them.	SÉD1: I’ve had the chance to try several sports, so I find that I’m quite diversified as a person now, I have... That makes me want to discover more. CK1: [...]So at that time there was soccer with the city so go soccer, go gymnastics, go this, go that.
Choice	They can choose what they want to be involved in, such as what sport to play.	JPÉD2: Then I remember in elementary school that all my friends were playing hockey.I was maybe in third grade and I was bugging my parents and I was the one who said: "I want to play hockey" and that’s when it really changed my life because if I had continued with soccer I might have stopped.
Social environment	The social context that has an impact on healthy lifestyle habits, such as peers, the sports team, etc.	OÉD2: [...] sometimes I was not motivated. Well, my friends would say to me, "Oh, let’s go, let’s go play some sports," and I would go, and in the end I was happy to go, but otherwise I wouldn’t have gone alone. And then, team sports are not played alone, so you need peers to play team sports, so that helps too.
Routine	Organizing one’s schedule with a view to integrating healthy lifestyle habits.	NK1: I’ve been walking or biking to work every day for the past 3 years. [...] It’s a routine, it allows me to do 45 minutes of activity. FED1: [...] in the morning I often go and do a small, very simple weight training routine but at least I do it every day.
Balance	The global health which is based on the maintenance of a balance between several spheres of the life, in periphery and in complementarity with the practice of physical activity (social, psychological).	GÉD1: I have opened up a little more time for my family, for my friends, and for new activities. I think it’s a healthier lifestyle than what I had before, where I was focused on one thing and one thing only, sports. [...] I always keep time for the other spheres of life. CK1: I have found a physical activity that I enjoy and that fulfills me socially, physically and mentally.
Physical and psychological health	These two dimensions of health are linked in the sense that one leads to the other in a cyclical manner.	AED2: I went to train every day outside, in the sun. It allowed me to make decisions, it allowed me to regain my overall health, psychologically and everything. MAK1: Then today I think that I train in a way, I do a lot of hiking, I like to be in the woods, I do yoga and then running, then it’s really to manage my mood and then manage... That’s it, to be well.
Intrinsic awareness of benefits	Awareness of one’s choices in terms of HLH, which makes one realize the importance of one’s actions. This awareness was once influenced by external elements, such as family, and now comes from within. It can occur suddenly or after a prolonged break from PA (injury, independence, etc.)	CK1: I like couldn’t walk like the world for a year. [...] to have something taken away that you know is good for you pi that you know makes you feel good is like. I can’t wait for it to come back. So as a result of that I put even more...actually I kind of became aware of how important it is to take care of your body and everything really. JK1: After I went to university, when I left I discovered more...at university, yes, you become aware of "okay, it’s cool, I’m already moving", then you learn why it’s fun to move, then when I was in Toronto I really stopped moving, then I understood why it was important to move because I stopped for the first time in my life. So that made me start again, I didn’t feel well, I wasn’t sleeping.
Physical environment	The proximity and quality of outdoor and indoor facilities that support an active lifestyle.	Mk1: [...] Everyone is there at the same time; the arena, the baseball field, the park. So the kind of location creates a kind of excitement to go outside and play with our friends outside and then bike to our parks. JK1: In Toronto, for real, the bike paths and all that is really better developed, it’s fun to ride a bike, there’s a bike culture that is incredible.
Outdoors	Outdoor activity (sport practiced outdoors, in nature or not, camping, etc.).	AÉD2: For my psychological health, uh, a rather determining change that I had was this summer when I was in nature all summer, really in the forest. Access to water, to a lake etc. So that just made me realize again how important it is to be surrounded by nature and how it has psychological benefits. EDG1: Every weekend we did something new, especially in nature. We would go hiking, we would go mushroom picking, unusual things, fishing, hunting.