Day 2 is centered around exercises where you push (like a press ... especially since you're particularly focused on your back and bis. "By training pull on Day 1 and push on Day 2, you may ...

Start strong with my go-to morning routine followed by an intense back and biceps workout. From daily habits to serious gym ...

You might be tempted to jump back into workouts with an everyday mindset. Don't. Your body needs to rest and recover to build itself up and acclimate to strain, so follow the plan as it's written.