Sport should be fun and physically demanding, but not physically punishing. With so much pressure to win, those playing the game may push themselves beyond the limits the human body can sustain. The results can lead to permanent injury and in extreme circumstances, even death. Editor-in-Chief Barbara Goode of Sensors magazine reviews the growing use of sensors to monitor player performance. Football helmets with MEMS sensors inside or "thermometer pills," for example, can help ensure the game remains exciting, but not tragic.