Sen. Cory Booker (D-N.J.) relied on a roughly four-day fast, his Hoka Clifton sneakers, 15 binders with 1,160 pages of material and a steady stream of notes from staff to gut through his 25-hour speech.

Why it matters: Booker, 55, had to remain continuously standing on the Senate floor to break the late segregationist Sen. Strom Thurmond’s record.

• Unlike Thurmond’s bathroom break, Booker never left the floor.

Zoom in: Booker was cramping from dehydration near the end of his speech, he said Tuesday night.

• 🪑 Staffers took away Booker’s chair on the floor to avoid him accidentally sitting down, or maybe to reduce the torture of looking at a chair he couldn’t use.
• ✉️ Staffers were passing Booker notes reminding him to conserve his voice and relaying stories from constituents.

Booker’s first post-speech meal included pineapple and watermelon.

• His Oura ring sleep score was zero, he told MSNBC’s Rachel Maddow on Tuesday night. No word yet on what his other Oura stats looked like after a day and change on his feet.