I’m a 37 M, my lifestyle allows me a lot of free time so I am very active, 6 days a week I double up on workouts activities. Regular stretching, pilates is absolutely necessary for me but also replacing my calories with nutritious meals, when your’e as active as you are it is really important to eat and eat a lot as a calorie restricted diet will cause injury too.
There’s also a lot of research that NSAIDs like ibuprofen although alleviate pain they impact gains and possible in some cases atrophy muscles so be careful if your taking NSAIDs for long periods of time.
Your muscle response is either psychological, DOMS from not working out or you have poor musculoskeletal. As I get older I need to stretch more than ever, you should be stretching out those angry muscles and definitely look into pilates I swear by it.