Great read! Do you follow Jade Teta and Metabolic Effect? They use an RBT, or rest-based training, protocol for their metabolic workouts. Similarly to what you described above about not prescribing preset rest times, in RBT the autonomy is in the clients hands - not the trainer. So their metabolic workout may last 20 minutes where they are doing various compound ("hybrid") movements, but they rest as they need it. Basically they "push until they can't, then rest until they can". So they end up going hard, forcing themselves to rest, then picking back up, repeat for duration of workout. I have excellent success using RBT with my coaching clients. They get an awesome workout, but don't end up like your sometimes-client above, ha. As always, loved the post. Thanks! --Brian
Creatinine is a chemical waste molecule that is generated from muscle metabolism. Creatinine is produced from creatine, a molecule of major importance for energy production in muscles. Creatinine has been found to be a fairly reliable indicator of kidney function. As the kidneys become impaired the creatinine level in the blood will rise. Normal levels of creatinine in the blood vary from gender and age of the individual. https://s10721.pcdn.co/wp-content/uploads/2009/05/when-meditation-gets-hard.jpg
Blood pressure rises with aging and the risk of becoming hypertensive in later life is considerable. Several environmental factors influence blood pressure. High salt intake raises the blood pressure in salt sensitive individuals; lack of exercise, obesity, and depression can play a role in individual cases. The possible roles of other factors such as caffeine consumption, and vitamin D deficiency are less clear. Insulin resistance, which is common in obesity and is a component of syndrome X (or the metabolic syndrome), is also thought to contribute to hypertension. One review suggests that sugar may play an important role in hypertension and salt is just an innocent bystander.
Adapted from: Chobanian AV, Bakris GL, Black HR, et al, and the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure; National Heart, Lung, and Blood Institute; National High Blood Pressure Education Program Coordinating Committee. Seventh report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure. Hypertension. Dec 2003;42(6):1206-52. 
These diabetes complications are related to blood vessel diseases and are generally classified into small vessel disease, such as those involving the eyes, kidneys and nerves (microvascular disease), and large vessel disease involving the heart and blood vessels (macrovascular disease). Diabetes accelerates hardening of the arteries (atherosclerosis) of the larger blood vessels, leading to coronary heart disease (angina or heart attack), strokes, and pain in the lower extremities because of lack of blood supply (claudication).
Many of you at this point know my story, for the entirety of my life I had tried diet after diet. I was active, I ate well, yet no one would believe that because I was obese. Indeed, my poor mother dragged me from doctor to doctor trying to figure out what was going on with me. She was desperately trying to help me understand why nothing I did worked and why year after year I gained more and more weight and felt less at home in my body. I know that I am not alone in this as so many of you have reached out to tell me that they are struggling with weight loss. This phenomenon, that I have titled weight loss resistance, is a huge concern to me! This was part of the reason I became a Naturopathic Doctor. In the days when no one could help me shed the extra 80lbs of body fat I had, I had to do my own research, I had to blaze my own trail and now I am compelled to share that!
According to the Mayo Clinic, doctors may use other tests to diagnose diabetes. For example, they may conduct a fasting blood glucose test, which is a blood glucose test done after a night of fasting. While a fasting blood sugar level of less than 100 milligrams per deciliter (mg/dL) is normal, one that is between 100 to 125 mg/dL signals prediabetes, and a reading that reaches 126 mg/dL on two separate occasions means you have diabetes.