Target heart rate is defined as the minimum number of heartbeats in a given amount of time in order to reach the level of exertion necessary for cardiovascular fitness, specific to a person's age, gender, or physical fitness.
Answer: Sunk Cost fallacy
Explanation:
The sunk cost can be defined as the cost that has already been incurred and cannot be refunded back. It is in contrasted to the prospective costs which are the costs of future and that can be saved if any action is needed.
The economist argue that the sunk cost has nothing to do with the future rational decision making.
The example of such situation is fees which is once spent is generally not refunded.
Plants because they go through photosynthesis
Those are your skeletal muscles — sometimes called striated muscle because the light and dark parts of the muscle fibers make them look striped