Here is an example of warm up, you can use before the workout session:
Before you start your workout, you need to do some preparation or you'll risk injury as well as be able to make fewer demands of your body – and so get less out. But stretch before you're warm and you can do even more damage. So you need to get blood pumping through the muscles you want to work.
Upper body - Three minutes on the rower or Nordic ski machine, working at 50-60% of your maximum effort level. You should finish slightly out of breath, but nothing more than that. Then do the dynamic stretches.
Lower body - Three minutes on the running or step machine working at 50-60% of your maximum effort level. You should finish slightly out of breath, but nothing more than that. Then do the dynamic stretches.
Outside - If you're miles from any cardio equipment, go for a 2-minute jog and then do the dynamic stretches below.
Warm-up Exercises and Stretches description:
Walking lunge with twist. Stand with your hands clasped against your chest. Step forward with your right foot into a lunge and twist your head and shoulders to the right. Reverse the movement to push back to the starting position, then lunge with your left foot and twist to the left. Perform 10 lunges with each leg.
Overhead squat to calf raise. Stand with your feet shoulder-width apart and your arms straightened overhead. Lower your body until your thighs are parallel to the ground, then push back up and rise onto the balls of your feet at the top of the move. Do 10 repetitions.
Upper body trunk rotation. With your feet shoulder-distance apart, stand with your back straight and knees a little bent. Start swinging your arms across your body at waist height - you should feel this mostly in your lower back. Move your arms higher to around shoulder-level to feel a stretch through your middle back. Now raise your arms to above head-height to feel the stretch in your upper back. Repeat each 10 times, ‘squeezing' slightly further each time to really feel the stretch.