“…Empirical studies have provided further support in showing the benefit of participating in SSL, including reducing emotional problems ( Essau et al, 2014 , Essau et al, 2019 , Fernández-Martínez et al, 2019 ), recovering faster from a stressful task as shown through cardiac recovery indexes ( de la Torre-Luque, Fiol-Veny, Essau, Balle, & Bornas, 2020 ), improving social and communication skills ( Fernández-Martínez et al, 2020 , Melero et al, 2021 , Melero et al, 2021 ), and coping with the covid-19 lockdown ( Orgilés, Espada, & Morales, 2020 . SSL has been implemented in a wide range of settings such as in residential care institutions ( Ramdhonee-Dowlot, Balloo, & Essau, 2021 ) and a Pupil Referral Unit for adolescents who have been excluded from mainstream schools ( Allan, Uzun, & Essau, 2021 ).…”