@AnUnknownPerson Generally the advice with working out is to start really small and then build week over week or session over session. In this type of setting it would probably be best to either only do 10 minutes of hard running or alternate between stints of running and walking. Something like 2 minutes running and then 3 minutes walking a few times over. Then they could progress in small increments.
Spread cheeks, not hate - some wise commenter from a long time ago