Fig. 1From: Sleep and physical activity: results from a long-term actigraphy study in adolescentsPredicted number of steps. Number of steps (in 1000 steps) is shown on the y-axis while age (in years) is on the x-axis. On the left side we see the predicted activity for boys and on the right side for girls (in blue for school days, in red for free days)Back to article page