During back squats, craning the neck is not uncommon when 'coming out of the hole'. This can destabilize & extend the entire spine. With air squats this is a negligible issue ー but it's dangerous to a loaded spine. Treat the back as a single unit, starting at the top of the head and ending at the tailbone.
BLUE-BROWN+ should be building on each set, but only if technique allows. Don’t add weight if the previous set was just okay. WHITE-ORANGE will focus on becoming more familiar with the movement -- only adding weight if sets remain consistent.
Strategy & Briefing
Relatively small sets & short rounds can make you want to go fast… stay smart. Don't start the first round at full speed -- take it back a bit -- smooth & steady with consistent breathing from the start. Movements should remain unbroken, but with a few deep breaths in between to control the pace. However, if you feel fatigue building quickly on the TtB, break them up. Pushing through will lead to singles and wasted time. Burpees and Thrusters will get uncomfortable, but you can push through these with little consequence. When you get to the last few minutes then you can put the pedal down and finish strong.