Probably not super important to cancer people, since they should all be on low carb/low-GI diets anyway, but interesting for people using the DCA+caffeine protocol.

But vigorous daily exercise is strongly recommended, aerobic and anaerobic, 30 minutes/day. So caffeine for DCA synergy would also help glycogen be replenished in muscular tissue.

The article applies to "exhaustive" workouts, including near or total exhaustion of muscular glycogen, which is not what cancer patients need to do.