Topical heat has long been used by athletes to increase local warmth and readiness. Tiger Balm-style pre-training support gets an old-school look for stubborn calf work.
Stubborn calves do not respond to polite training. Knockout growth requires attacking the lower legs from multiple angles with enough frequency to force adaptation.
Calves are stubborn, and lazy tempo work will not fix them. Slower, stricter execution may be the missing piece in a calf-training method that has sparked plenty of discussion.