The "343": We all know what that number stands for. For many of us not a day goes by we don't think about it. It shaped the future for all of us. Now a workout to honor those fallen heroes.

For time: Advanced:
100 flights of stairs-OR-run two miles
100 push-ups
100 squats
43 burpees 

Experienced Workout #2: ​
Body weight exercises can be very effective. Here is a good one:
Push-ups: 25-50 (number will range depending on person/strength)
Plank: Hold for 60+ seconds
Flutter Kicks: 50 total (25 kicks each leg)
Mountain climbers: 50
Repeat 5-6 times

Experienced Workout #3; "The American":
This workout will push your mental fortitude and heart, but will be well worth it and you will feel like a damn good American Warrior when you're done:
Burpees: 30
Squats: 50
Jump-lunges: 20
Pushups: 30-40
Crunches: 30
Sprints: 5x's 50 meters
REPEAT 5 TIMES