There are peaks and down moments.
Intensity and calm.
We come into this planet with a wave-going up and going down. The waves of light, sound, ocean, UV...life are to teach us that just as it goes up so too will it come down.
It always helps to take a deep breath and drop (relax) your muscles and that the biggest tests are the ones in your own mind.
The challenge is to stay in the moment and take it one contraction (challenge) at a time.
Remind yourself, "I just have to get through this one."
Notice that there is always a break in between because otherwise you lump everything into one long intense experience. Take advantage of the breaks to catch your breath, strengthen yourself, and prepare yourself for the next one knowing that just as Hashem helped you to get through that one, so too will He bs'D help you get through this one.