Raise your hand if you’ve seen people do pullups and thought “I wish I could do that”, but then you never tried it because you didn’t want to look like a weakling in front of all the other people in the gym (who probably would think “good for you for trying” but in our minds they would point and laugh).
Functional training is an often misunderstood concept. I have heard people say that functional training is training with a Bosu and stability balls. Not exactly. Functional training is literally training for function. It means that we train movements instead of muscles.