Metabolic training sessions can involve heavy strength training, or not. They can require lots or neural recruitment, or not. They can use complex movements, or simple ones. They can require equipment of varying types, or no equipment at all.
The key is to utilize a variety of tools, techniques, intensities, durations, and movements to accomplish what you are after, all while maintaining safe exercise technique.
It requires careful thought and programming, as well as judicious application to get it right.
Not every workout should be a hammer.
You must balance regular strength training, metabolic sessions, recovery/mobility sessions, simple movement, sound nutrition and ample sleep.
Too much, or not enough of any one of these things can hold you back, or worse, cause overreaching, overtraining, or injury.
Exercise is about delivering the minimal effective dosage to achieve what you’re after.
Don’t be afraid to ask a qualified coach.