and between exercises

1. Warm up with a dynamic warm-up or low-resistance sets before starting your workout 2. Stretch before starting your PRE workout 4. Allow rest days between PRE sessions 6. Learn the proper techniques for all PREs 8. Exhale when applying force to the resistance 9. Apply the principle of progression 10. Rest between sets. Please note that option 3, "Focus on one muscle group for each workout," could be safe, but it depends on the individual's fitness level and goals. However, it is generally recommended to include exercises that target multiple muscle groups in a workout routine. Option 5, "Spotters are not needed when you are performing low-weight, high repetition sets with free weights," is incorrect. Spotters should always be used when performing any kind of resistance exercise to ensure safety. Option 7, "If the weight is really heavy, you can use sudden or quick movements to power the weight up," is also incorrect. Sudden or quick movements can increase the risk of injury and should be avoided.