HIIT Sprint Workout

Yesterday morning I decided to switch things up and take a group class at my gym called Head to Toe. My mom and sister had bought a group on type deal to try the gym out. The class was really hard which I was surprised by I normally don't take the large group classes like that because I am so used to training with only a few individuals but it was a great challenging class.

After class I decided to work on my sprints and do this HIIT workout that I found on One Fit Foodie.

Minute	Incline	Speed	Interval time (min)
1-5	0	6.0	5
5-6	10%	7.0	1
6-7	10%	3.0	1
7-8	10%	7.0	1
8-9	10%	3.0	1
9-10	10%	7.2	1
10-11	15%	5.5	1
11-12	15%	2.0	1
12-13	15%	5.6	1
13-14	15%	2.0	1
14-15	15%	5.5	1
16-17	2%	9.2	1
17-18	2%	3.0	1
18-19	2%	9.3	1
19-20	2%	3.0	1

This is an intense workout but it is only 20 minutes so it goes by fast and you feel like you had a really great workout once you are finished.

Question: What is your favorite quick workout?