Two degree located a positive influence on personal fitness results (a growth of 5 15% (MD = 0.37, p < 0.01) at 3-month follow-up ; an increase of 4.2% (MD = 1.57, p = 0.06) at 12-month follow-up ). One study found a positive effect on wellbeing scores (an increase of 9%: MD = ? [...]