### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi, I am 24 male with 173 cm height and 71 kg weight. I work as a software engineer which involves lot of sitting job. Also from past 2 month i have started going to gym. From past 3-4days i am feeling strain in my back,its like it is very stiff. Whenever i Sit down or bend i feel a kind of strain in my back ,however it is not pain, is this strain or stiffness only called as a back pain or is it different from back pain? And what can be the reason for it as i am just 24 and i am physically active as i am going for aerobics for last 7 months. One more thing just to inform,i have lost 16 kg in last 7 months with aerobics,can that lead to this strain? I have heard that if once this back pain comes it is lifelong. Is it true or can it be recovered fully? and what precaution should i take.? Thanks for your answer in advance.

### output:

Hello, As most desk jobs lead to RSI (repetitive stress injury) and due to which back pains are common.  As you have done aerobics in the past this has helped improve the cardio respiratory functions and some lower limb muscle Strengthening.  As you went to the gym this may have aggravated the back pain with some abnormal unguided and unplanned movement.  I will advise to do core stability exercise, spinal muscle strengthening exercises, hip muscle strengthening exercises, lower limb strengthening exercises.  Use the mat exercises and Pilates rather any equipment. Post which you can start weight lifting and other activities at the gym. Usually, most gym injuries are ignored and not a proper principle of practice is implemented by the gym centers or the instructors.  It's better to undergo the core stability and other exercises under a guided physiotherapist, so the spine is stable and strong by which injuries are avoided. Also, before performing any gym activities, it's better to do warm-up and stretching exercises, so you can avoid injuries. Back pains are common but they aren't permanent. They recover if a guided exercise program is designed based on the individual. Hope I have answered your query. Let me know if I can assist you further. Take care Jay In Chat Doctor. 