SESSION: 15's & 30's (35 mins total)

5 mins easy jog

5 x 15 secs hard / 45 secs easy

5 min easy jog

5 x 30 secs hard / 30 secs easy

5 min easy jog

5 x 15 secs hard / 45 secs easy

5 mins easy jog

Let me know how you get on! Enjoy!