No matter what your background or how in shape or out of shape you are, regular exercise is for you too! Coming from a Fitness Coaching perspective no matter if you've exercised yesterday or 10 years ago, all workouts are scalable to your individual fitness level and abilities. Even if you have an injury or particular limitation all exercises/movements can be modified so that you CAN benefit from any program.
Getting Exercise Results Are All About Intensity
What if I can't do that many? Honestly, it doesn't matter how much weight you use, how many reps you perfrom, or how fast you go compared to the 20-something across from you. All you need to keep in mind is your own personal intensity. You'll improve with every workout as long as you make sure to keep yourself challenged.
What if I'm not very physically fit? That's okay! That exactly what our program is for. Our group has all ages and conditioning levels and we focus on everything according to our own fitness abilities. Everything we do is scalable for all fitness levels and I instruct everyone to go at their own pace, but believe me I will definitely push that pace.
From a workout perspective... The reason people lose so much fat with kettlebells & high intensity bodyweight movements, and lean up so quick, is because you get more work done in a shorter amount of time with INTENSITY.
Remember it's all about scaling your intensity to YOU. Do that every time you exercise and you'll be fine in all your progressions.