Nope you're right - triceps are "rear-chain" but it's not a back workout. That said you are _unable_ to really stretch your lower back while in a seated positi

Nope you're right - triceps are "rear-chain" but it's not a back workout. That said you are _unable_ to really stretch your lower back while in a seated position, and it's much easier to engage the core and lower back in push up position. Done properly they are also a core strength workout though which is just as important.