Which of the following can produce a powerful feeling of euphoria ("rush") accompanied by a reduction of anxiety,
relaxation, and pain relief with higher doses impairing breathing and causing death?

Evaluate the scenarios and select the one that demonstrates the training principle overload. kai swims faster and faster every day. katie stays consistent in her routine. maggie does kickboxing daily so she can win a kickboxing match. sarah usually likes to run, but tries swimming. !