Do such splits work well?

[Qisit]

My trainer suggested me to create a split where I would train each day one big muscle group, and one smaller. For example – chest and biceps, back and triceps, quads and delts, etc. Would this approach work?

 

[Lev Butlerov]

That is actually quite a good split. In reality it does not matter all that much. You need to find what works best for you, but obviously, doing more than one big muscle group per day is not a good idea. Another usual approach is to split the days into pull exercises, and push exercises.

 

[stevesmi]

the thing i like about splits is that you won't get bored and a good split allows you to stay honest and hit muscle groups evenly

I like the push/pull/legs split myself. you can change the exercises up constantly to keep it fun