and tightness the day of training up to having DOMS that lasts a few days is likely best practice.

The less similar the training stimuli are the more interference

A good mind-muscle connection assures the lifter that tension, volume, and metabolite stimulators are being applied to the target muscle.

The inflection point at which robust gains first begin is the stimulus threshold.

4. The more disruptive (muscle damaging) and fatiguing the added training, the more interference.

hamstrings both flex the knee and extend the hip, and neither hip hinges nor leg curls do both at the same time35.

Relative effort is a measure of how close to failure you are on a lift or how difficult the lift is for you with respect to your current capacity.

In heavier training the mind-muscle connection is characterized by the perception of high tension in the target muscle. The other end of the loading range (lighter weight and more reps) should elicit a painful burn from metabolite accumulation in the target muscle toward the end of each working set.

This is an analysis of what qualities are required by a sport and its athletes. This information can then dictate what specific training must be done, what diet phases are needed, and what skills and tactics must be practiced for the athlete or enthusiast to progress. Although a needs analysis for a physique competitor or enthusiast will dictate di