Move better and sidestep injury with the side lunge When it comes to cardiovascular fitness, you may tend to focus on activities that move you forward, kraken14 at such as walking, running and cycling. Likewise, in weight training, most traditional exercises center on forward and backward motion, occurring in what’s known as the sagittal plane. But there is another plane of movement that deserves your attention: the frontal plane, where movements go from side to side. If the majority of your workouts take place in the sagittal plane, you risk creating muscular imbalances and leaving yourself susceptible to injury during lateral movements in everyday life. Incorporating frontal plane exercises, such as the side lunge, into your fitness routine can prepare your body to move better and be more durable in daily-life activities.