No matter what our intuitive spidey senses (or our eyes) tell us about the health of a market, we gotta get technical to know for sure. A technically weak market means that technical data analysis was used that showed the market needs to hit the gym and stop eating junk food.
Moving averages are a common indicator of market health, though they must be looked at together. For instance, if trade volume is increasing over time, that doesn’t necessarily mean a market is healthy. If trade volume is increasing at the same time that average prices are decreasing, that means we have a technically weak market on our hands. The reverse is also a weak market: if we have increasing average prices and decreasing trade volume, that means money flow (the market’s metabolism) is slowing down.