why stop playing? find out if you have an indoor hockey comp near you and play so indoor. it gets your reflexes fast as its smaller field so closer shots. but its a lots of fun. (just a little less than outside)

anyways have a fun off season

I have this problem as well. We have a 8 weeks bye during summer. We get a fitness timetable from our fitness coach!
you should go for a run 3 times a week and should do specific training such as 10meter,20meter and 50 meter sprints. Running up a hill is good for your quads.In the morning we used to do a little muscle programm with pushups,crunshes,situps,stabilisation positions.
Thats how we keep us fit during a bye.
hope it helped.

warm up before you stretch. you want to aim for the splits but it won’t happen fast depending on how flexible you are. spend a couple of minutes a day or every second day stretching. you should stretch your:
hamstrings
hip flexors
quadriceps
inside abductors
groin
calf
gluteus maximus

and anything other things you want to stretch.

hope this helps