go in for (something)
1. To enjoy or be enthusiastic about something. Thank you for the invitation, but I don't really go in for experimental jazz.
2. To engage or participate in something. I went in for cycling to work at the beginning of the summer, and I haven't been healthier!
3. To enter into a competition. She's decided to go in for an ultramarathon this spring.
go in for something
to take part in something; to enjoy (doing) something. John doesn't go in for sports. None of them seems to go in for swimming.
go in for
1. Have a particular interest in or liking for, as in He really goes in for classical music. [Mid-1800s]
2. Take part in, especially as a specialty. For example, She's going in for tennis this year. [Mid-1800s]