I was lifting using almost no rest between lifts - After every workout I felt good but exhausted and I wasn't making any strength gains then I spoke with a trainer who suggested at least 60 seconds between lifts. After doing this I experienced strength increases then when I moved to 90 seconds between lifts I once again experienced strength increases. I thought with no rest I would develop muscle quickly like I did 30 years ago but that wasn't the case at all.
I was doing this because I lost 50 pounds 2 years ago and through healthy eating, weight lifting, rucking and a good mental attitude I have been able to keep this weight off. I feel better than I have in years and I am much happier with rucking 4 days and week and lifting 3 days a week and enjoying the first 6 months of retirement. If interested you can see my story at - https://healthyretirementstrategies.blogspot.com/p/my-story.html - Using the menu selections and the links you can also view Exercise posts, Health Eating posts and Retirement related posts. - I hope you find this information helpful, interesting and funny.