Functional fitness is exactly what is says on the tin, it’s designed to train and develop your muscles to make it easier and safer to perform everyday activities that have a common function, such as carrying shopping bags/handbags, lifting, climbing stairs and playing with the kids.
Functional fitness comprises of compound movements using multiple different muscle groups at once) it also emphasises a lot of core stability.
For example, this picture is a functional compound exercise because it trains the quads, glutes, calves, abs, lower back, front deltoids, triceps and obviously the lungs and heart. This is relevant when you rise up and down from a chair or lift objects above your head. By training your muscles to work the way they do in everyday tasks, you prepare your body to perform well in a variety of common situations.
There are literally hundreds of different of functional exercises to choose from, if un sure type Functional exercises on YouTube or ask a professional.