In addition to strengthening the core muscles, it's also important to address any mobility problems, says Jacque Crockford, M.S., C.S.C.S., exercise physiology content manager at American Council on Exercise, which can sometimes be what's causing pain. If specific movements like twisting or bending or extending your spine feel uncomfortable, there may be mobility (flexibility) issues at play. Doing some gentle stretching (like these yoga poses) might help. (If it gets worse with those stretches, stop and see a doctor.)
En español | You probably know someone who’s traded a worn-out hip bone for ceramic or cobalt chrome. Some 370,000 Americans undergo hip-replacement surgery each year (the average age for this is 65). But the operation isn’t a cure-all: At least 1 in 10 hip-replacement recipients will need a second procedure to repair a dislocation, mechanical failure or infection. And hip pain, with or without surgery, can be a struggle. Chronic hip pain was a factor in the accidental opioid overdoses that claimed the lives of musicians Tom Petty, 66, and Prince, 57.
There are a number of ways to classify low back pain with no consensus that any one method is best.[5] There are three general types of low back pain by cause: mechanical back pain (including nonspecific musculoskeletal strains, herniated discs, compressed nerve roots, degenerative discs or joint disease, and broken vertebra), non-mechanical back pain (tumors, inflammatory conditions such as spondyloarthritis, and infections), and referred pain from internal organs (gallbladder disease, kidney stones, kidney infections, and aortic aneurysm, among others).[5] Mechanical or musculoskeletal problems underlie most cases (around 90% or more),[5][34] and of those, most (around 75%) do not have a specific cause identified, but are thought to be due to muscle strain or injury to ligaments.[5][34] Rarely, complaints of low back pain result from systemic or psychological problems, such as fibromyalgia and somatoform disorders.[34]
Herbal medicines, as a whole, are poorly supported by evidence.[90] The herbal treatments Devil's claw and white willow may reduce the number of individuals reporting high levels of pain; however, for those taking pain relievers, this difference is not significant.[17] Capsicum, in the form of either a gel or a plaster cast, has been found to reduce pain and increase function.[17]
Brace your core and bend your knees to lower down into a split squat. Your left knee should ideally form a 90-degree angle so that your thigh is parallel to the ground, and your right knee is hovering above the floor. (Quick position check: your left foot should be stepped out far enough that you can do this without letting your left knee go past your left toes—if you can't, hop your left foot out a bit farther away from the bench.)
For example, your quadriceps muscles are a group of four that are located at the front of the thigh; one of the group members, the rectus femoris flexes the hip, which brings your lower extremity (thigh, lower leg, and foot) forward, in front of you. On the other hand, your hamstring muscles are located at the back of the thigh. When they contract, they extend the lower extremity, bringing it behind you. 

Apply the above concept to your hips. When you sit, your hips are in a "flexed" position. Therefore, the muscles that flex your hips are in a shortened state. You probably spend at least a third of your day sitting down. Think about how much time those hip flexor muscles stay shortened. A lot. Over time, they become tighter and tighter until you look like the old man in the picture. So unless you want to look like that, perform the stretches shown below.
When hip pain comes from muscles, tendons, or ligament injuries, it typically come from overuse syndromes. This can come from overusing the strongest hip muscles in the body such as iliopsoas tendinitis; it can come from tendon and ligament irritations, which typically are involved in snapping hip syndrome. It can come from within the joint, which is more characteristic of hip osteoarthritis. Each of these types of pain present in slightly different ways, which is then the most important part in diagnosing what the cause is by doing a good physical examination.
^ Enke, Oliver; New, Heather A.; New, Charles H.; Mathieson, Stephanie; McLachlan, Andrew J.; Latimer, Jane; Maher, Christopher G.; Lin, C.-W. Christine (2 July 2018). "Anticonvulsants in the treatment of low back pain and lumbar radicular pain: a systematic review and meta-analysis". Canadian Medical Association Journal. 190 (26): E786–E793. doi:10.1503/cmaj.171333. PMC 6028270. PMID 29970367.
Why is back pain still a huge problem? Maybe this: “It is extremely difficult to alter the potentially disabling belief among the lay public that low back pain has a structural mechanical cause. An important reason for this is that this belief continues to be regularly reinforced by the conditions of care of a range of ‘hands-on’ providers, for whom idiosyncratic variations of that view are fundamental to their professional existence.”