Before Alex Honnold’s “Nose” speed record, and before Jonathan Siegrist sent “Jumbo Love,” the pair teamed up this spring for some training time—each working projects outside of their comfort zones. Honnold learns what it feels like to be #siegristing on “Atonement,” and Siegrist ups his bicep game while working then project “Bone Tomahawk.” Video: Tara Kerzhner