The fun thing about training is the experimenting and seeing what comes out of it. Being an advocate for Isometrics especially Overcoming, it is a method that not only strengthens the tendons and ligaments but also enhances the quality of life as you move through ranges of motion. Yeah sure you're hitting various angles in a single point but as you strengthen those single points that leads to greater range of motion later on, it puts another perspective into play.
A good routine that helps build that strength can be done almost in a split style; doing various muscle groups on certain days or you can work on doing Upper Body one day and then Lower Body the next. The possibilities are endless. Working on certain muscle groups can help find your weak points from another point of view and hit the muscles hard without spending a ton of time. Although I prefer the 7-12 Second contraction method, you can vary the intensity and length of time however you like or what gives you the most benefit. That's the true secret is what helps you move forward and have a wealth of knowledge that puts you in the driver seat instead of being the passenger.
Having an upper and lower body split routine can be beneficial because you can hit muscles hard and then rest them while working on the others. You can even make a point of working on say shoulders and chest on let's say Monday, Legs on Tuesday, Back & Arms on Wednesday and Legs again on Thursday. You can then have the option of taking a "rest" day and do some casual stuff or repeat the program, it's up to you. Just remember to pay attention to your body and get a feel for it, you don't want to go into overkill mode. If you need a break, take it, your body, your choice.
Isometrics in my eyes and in many, is one of the most underrated methods of strength training for a reason. It's not glamorous nor is it easy but it also doesn't sell a whole lot cause all it looks like to the untrained eye is just a hold for a few seconds or longer. Looks too simple and people shrug it off. It's simple but even the most basic holds can test your strength and even show your weaknesses almost immediately. When you utilize Isometrics into a routine, it can make you faster, lift with greater efficiency and hit spots you may be lacking at. It's more than just a stand-alone or add on, it's a next level style of work that gives you tools that bring you into another realm of strength. The type of strength that means something, life saving, the difference between winning and losing, the way you shake a person's hand, your performance in sports and combat. It is an essential part of physical fitness that can't be ignored.
Learn the value of Isometrics and incorporate them into your life, see and feel what you can accomplish. Keep being amazingly awesome.