How do you punctuate this sentence Jake who is twenty-seven studying to be a yoga teacher?

This sentence is incomplete and needs more context. Here are some possible ways to punctuate it, depending on what you want to convey:

Option 1: A simple statement about Jake's age and occupation

* Jake, who is twenty-seven, is studying to be a yoga teacher. (This uses commas to separate the non-essential clause about his age.)

Option 2: A question about Jake

* Jake, who is twenty-seven, is studying to be a yoga teacher? (This adds a question mark to make it a question about whether this is true.)

Option 3: Part of a longer sentence

* Jake, who is twenty-seven and studying to be a yoga teacher, is also a volunteer at the local animal shelter. (This uses commas to set off the non-essential clause about his age and occupation.)

Please provide more information about what you want to say so I can give you the most accurate punctuation!