Let’s say it took you 15 minutes to do 100 push-ups in today’s training session. In order to achieve progressive overload, it’s enough for you to do 100 push-ups in less than 15-minutes in your next training session. This is why your training sessions will get shorter as you improve. The faster you complete your reps, the quicker you’ll wrap your training up and move on with your day. When I got my six-pack abs, people couldn’t believe that I was training for less than a total of 2 hours a week. (Actually, it was closer to 1,5 hours).
Strength training is an essential part of most fitness routines, but if you want a six pack, building more muscle can help. Strength training with weight lifting not only helps build muscle, boost metabolism and increase muscle definition, but it is a great way to burn lots of calories in a short time. Strengthening the muscles, tendons, and ligaments also helps reduce strain on the joints which ultimately can help prevent many sports injuries.
The Ab Roller is number 9 for targeting the rectus abdominis, and you've probably seen this around the gym (or under your bed) for the last several years. What's nice about this that it provides neck and arm support, something that might be helpful for people who feel strain in the neck when doing regular crunches. If you don't have an Ab Roller, you can still get a great workout with a variety of core exercises.
To do it: Lie on the floor with your arms extended above your head and both legs lifted in the air at about a 45-degree angle. Inhale, roll your head and shoulders off the mat, press your ribs down toward your hip bones and exhale, lifting your entire upper body off the mat (keeping both legs up). At the top of the exercise, "land" your arms so that the arms and legs are parallel to one another. Then, breathe "naturally" while holding the top/up position for two slow counts. Reverse the action by inhaling and then rolling your back, shoulders and head down onto the mat exhaling at the start position.
Bodyweight exercises always recruit more than one muscle group for each exercise so it is impossible to isolate and work one muscle group specifically by doing one type of exercise. It is however possible to increase the load targeting specific muscle groups with specific exercises so that they respond the most to the challenge. The following chart helps you find the exercise that helps focus more on specific abdominal muscle groups for best results.