highly significantp < .001
affect ecological momentary assessment healthy eating physical activity stress Peer‐Mentoring Team‐Program (Line A) of the German Psychology Society European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ERC‐StG‐2014 639445 Austrian Science Fund (FWF) I 02130‐B27 Physical activity relating to subsequent stress and affect As can be seen in Figure 2 , more physical activity was associated with less subsequent stress (β 10 = −.104, SE = .021, p < .001) when controlling for stress level at time t −1, which was a highly significant predictor for stress at t itself (β 20 = .393, SE = .036, p < .001).