Each of the following except was created to congress with investigations

I think there are missing information in your question. But, I'd like to go ahead and answer about what can help Congress in their investigations. Current practice are the hearings where they can recheck pending legislation, investiate issues that may need legislation and to investigate federal programs.

The best bet is to google

You can drink laxative, or  do this exercise when you are sitting in the bathroom on the toilet. to relieve  constipation  fast or in about 1 minute, pinch your nose after your usual exhalation. start holding your breath. but do not mouth breath during this just hold your breath.