Outdoor Park Workout Suggestion

Fall is a beautiful time of year to get spend some time at the park.  Walking, observing the leaves, and beating yourself up with an intense workout. 
But this has to be structured, and must be performed until failure if you want it to work.  Watch my video to get a detailed idea of some exercise options.
But my approach will be different.  It's more than just bouncing around a field with a smile on your face.  It's about understanding what you have to do, and working to failure. 

Here is an idea.

2 X 100 metre (or yard) windsprints.  Do your 100 as fast as possible, then walk back somewhat quickly.  Your rest period should be about the 1:30 range.  Don't go much longer than that.  Repeat for your second sprint.
Take a 2:30 break.

2 X 200 metre (or yard) windsprints.  As above, do your first 200 metres as fast as possible, then walk back to the start line.  If you are working hard, you will be gasping for air.  Give yourself a bit longer between 200's.  Maybe 1:45-2:00.  But no longer.  Do your second sprint.
Take a 2:30 break.

Now, like my living room workout video, we will keep going with lower body.  Because you will be half gassed aleady, bodyweight squats may work.  But you may need one foot squats, jump squats, split squats, or assisted one foot squats as an increased difficulty factor.  Watch the video to get some options shown to you.  But the key here is, to select a difficulty factor that will get you to muscular failure in about 45-75 seconds.  Work hard.  This is not supposed to be something that you enjoy, and smile through.  It's supposed to work!!!!
Do three sets, resting 1:30 between sets.
Take a 2:30 break.

Next will be the core segment.  Dead bugs, crunches, bicycles, planks, or whatever the exercise.  It must get you to failure in that same 45-75 second range.  As above, do 3 sets, and rest about 1:30 between sets.
Take a 2:30 break.

Last segment will be the push segment.  Bodyweight push-ups or a variation of them.  Watch the video for some quick ideas and demos.  But get to failure.  As the last two segments, repeat the same structure.  Because this is the only upper body on there, you may want to do 4 sets to make you feel more accomplished.  Me, I'm done after 2 or 3.

You should be exhausted, in a fast-intermediate muscle fibre way.  This is supposed to be a hard core, muscle building adventure.

If you want to be like everyone else, go with a group, chat, smile, laugh, have a 120 minute session, pay someone to be your group leader,  then go for beer and pizza afterwards and talk about your tough workout.

But if you want something that works, but most people are scared to do, try this routine out.

By the way, there are many other exercises in a park that can get you to failure.  I know that I left out lots of other variations, including bands. This is only a suggestion.  Try this one, and really stick to the suggested break times. 
See what happens.  Let me know, and give me more suggestions.  Always willing to learn.

Have a nice day in the park.