Targeting specific muscle groups gym workout with weights plan is best for those people who are willing to improve their muscle size, lose fat, whole body improvement and gain strength for their whole body and specific muscle group. In fitness, change is better for good, we can not stick with one workout plan for long or training method.
You must learn about proper warm up and cool down after workout. click on names to find How to Warm-up before workout? and How to Cool-down after workout?. You must also learn about Static Stretching for avoid DOMS. Delayed-onset muscle soreness (DOMS) is muscle pain that begins after you’ve worked out.
It is also advisable to start with light-weight a few 2-3 sets of your first exercise and consider it as your part of the warm-up. if doing bodyweight workout then your body must be proper warm-up before workout. Instead of body-weights exercise you also can choose a treadmill or cross-trainer as your warm-up for 10-15 minutes before workout.