Explanation:
Its because of the sunlight being much hoter than your body absorbs the heat of the sun.
And its also because of aerobic respiration in which your body takes in oxygen and digests gluecose to creates energy(beacuse of any physical activity like, playing and stuff). So during the proscess in which uour body creates energy(energy-andenoisine triphosphate) HEAT is also created
Thus, your body fells hot during playing and in sunlight
Hope it helps
Also see my comment pls theres another answer.
