<s>[INST] hello ,my name is roy,I am 70 yrs young.and over the last 3 yrs, I have been getting aching muscl;es and back pain, and it only bothers me whenever I mow the yard with my push mower. it only takes about 3 minutes of walking and pushing,until my whole body gets so weak that I cant hardly walk .so I have to sit down real quick, and rest, and after about 10 min. I am ok again, and it only happens when I mow the yard, and weed eat. an its been going on for about 2 or more yrs,and getting worse, I get so tired and so weak so fast, I had a kidney trasspland 17 yrs ago,and I take anti rejection drugs, and prednisone, and 3 different kinds of high blood press. meds. I don t take any kind of statins at all. so I don t know what it might be, God help me@@@!!!. my e mail address is... YYYY@YYYY [/INST] Back pain which aggravates after walking or pushing and relieved with bending forward, sitting or taking rest suggests lumbar canal stenosis .it's a dynamic phenomenon in that neural canal diameter decreased due degenerative spine disease. In initial stages analgesics such as ibuprofen and flexion regime exercises (series of exercises in which abdominal muscles strengthens) gives some relief. For this you need experts guidance by rehab specialist and physical therapist. Hope this answers your question. If you have additional questions or follow-up questions then please do not hesitate in writing to us. I will be happy to answer your questions. </s>