Answer: according to me ADVENTURE!!
Explanation: adventure is beneficial for everyone. there is no specific age for it. even our life is an adventure waiting to know what could happen next. travelling is also same as adventure because it is a main spot where we get more adventures.i could give you an example, jumanji its quite exceeding our expectations and we think that we are in it. okay please don't go there right now. adventure gives us memorable experiences. for me school is my adventurous spot,quarrels of students,the complaints of class pets and so on. and according to science our brain would work smooth and faster. and we would not be a lazy poke anymore!!!.
hope this para is beneficial to you and others. have a nice day!!