To follow up: I've been eating "carnivore" for three months now, and may never go back to any sort of standard diet. Steak, eggs, shrimp, salmon, potroast, elk, deer. Aches and pains are largely gone, what I thought was arthritis in my finger and toe are gone, skin issues gone, toilet visits are extremely "efficient." Its been glorious. Energy is superb and I have the waistline I did in high school. I don't know if I've ever had visible abs in my life, but I have them now. I'm not getting veiny and shredded but I don't particularly care to, either.
150-180 minutes of "Zone 2" cardio a week, period.
Presence of muscle tissue has been shown to be more protective than absence of fat. Make yourself and stay strong, carry around some muscle mass, take care of your weight but don't obsess over those last few pounds, they mean nothing outside of your own mind.
Right now I am performing five sets each of three barbell exercises five days a week, 10-15 mins of rowing at 135bpm heart rate, and then doing a 90-120 minute ruck on Saturday mornings with 50-60lbs. This is steady state cardio but it is also very much meditation; it does as much for my mental health as it does for my heart and lungs.
Its been a fantastic change to my otherwise obsessive compulsion with diet and exercise.