FRUSTRATED WITH MY SEX LIFE 😤

Okay so me and my boyfriend has great sex alll the time 😩 but lately I haven’t been feeling it . And it’s not because of him , it’s actually because of me . My body is so stiff . I can get on top and ride him for probably 3-5 minutes and then I’ll get tired 😂 not even that though, I CANT touch my toes . I’m not flexible at all 🙄 but I wanna be 😒 is there any tricks or tips I could use for helping me 😭