It ' s directly proportional to how much effort you put into it . I practice Ashtanga yoga 45 x per week . Took a year to go from fingers touching the ground in forward bend to palms on the ground . Splits I am at about 85 % But everyone is different . Ironically , my back feels great , but my legs are always sore from stretching ! Stretching has many other hidden benefits . I doubt you will have any regrets if you start a 30 minute daily routine . <| sep |> Number of reasons . 1 You can open your eyes wider if you open your mouth too well I can anyway 2 Stretches the skin on your cheeks a bit , giving you a tiny bit more room . 3 It just seems reflexive . <| sep |> It ' s just a personal peeve of mine when people conflate getting lucky or getting good RNG as skill or effort . Even if you do everything you can to skew the RNG in your favour , there is always that element of getting fucked over by the RNG regardless . Effort is a bit of a double edged sword especially with gacha games . All the money in the world andor playing exhaustively to max out draw chances won ' t guarantee you that one unit you really wantneed .