13Hunching Over Cardio Machines
Using treadmills and stationary bikes might be pretty straightforward, but you'll see a lot of people having bad posture while working out in these machines. They tend to hunch over, especially when they're already fighting fatigue. Aside from causing back and neck pain, bad posture also promotes
bad habits that might give you lifelong functionality issues.
To prevent this, avoid using the rails unless you're having trouble balancing on the machine. This will tighten your core and automatically help you keep a relaxed, straight posture while you work out. If you really need to hold the rails, don't turn your hand inwards to prevent your elbows from bowing out and your shoulders from hunching.
Just think of it this way: If you can no longer maintain a good posture, then it's time to rest.