When it comes to leg day, it's hard to overlook the quads.
The quads are located in front of the thigh and are one of the biggest muscles in the body.
They help to protect the knee joint which can be easily stressed, so it's vital to keep these muscles healthy.
This means it should be focused on during anyone's workout regime.
So if you're struggling to get inspiration to target your thighs, we've got you covered.
We spoke to Amber Gamble, a personal trainer at F45 Chelsea, who revealed five simple workouts to try.
What's your favourite muscle group to train? Share it with us below...
1. Front-loaded barbell squat: 4 sets of 10-15 reps
How to do: Hold the weight in front of you placing it on your shoulders.
Get your feet a little bit outside of the shoulder width stance with toes pointing straight.
When you're doing this exercise with the bar, sit back but make sure your knees don't buckle.
2. Weighted reverse lunges: 4 sets of 10-15 reps
How to do: This is a little bit more difficult as you have to catch your balance. Stand with your feet hip distance apart.
Take a step back and lunge down, make sure the knees are behind the toes.
Then drive up with your heel and repeat with the other leg.
3. Weighted step-ups: 2 sets of 10-15 reps on each leg
How to do: Hold the dumbbells in your hands or a barbell across your shoulders.
Step up with the right foot, pressing through the heel to straighten your leg.
Bring the leg foot to meet your right foot on top of the step and bend your right knee then step down with the left leg.
4. Weighted split stance squat: 2 sets of 10-15 reps on each leg
How to do: Keeping your torso straight, lower until your back knee almost touches the floor.
Then push back up. Make sure your knees are in line with your toes.
Complete all your reps on one leg, then switch to the other.
5. Pistol squats using suspension trainer: 2 sets of 10-15 reps on each leg
How to do: Stand with your feet hip-width apart and extend the right leg out in front of you without touching the ground.
Keep your core tight, neutral spine and arms fully extended in front.
Lower down into a squat maintaining weight over the left heel.
Alternatively, you can gain inspiration by hitting up one of the F45 classes.
The Romans, Mkatz and Red Diamond, plus a few others, are great to for resistance training.
These classes are scheduled on Tuesday's, Thursday's and Sunday's of every week and they incorporate moves to gain serious muscles.
For more information, head over to the F45 Chelsea website.