Summary. The species interactions discussed above are only some of the known interactions that occur in nature and can be difficult to identify because they can directly or indirectly influence other intra-specific and inter-specific interactions.s a result, ecological interactions between individual organisms and entire species are often difficult to define and measure and are frequently dependent on the scale and context of the interactions (Harrison & Cornell 2008; Ricklefs 2008; Brooker et al. 2009).
Generally, people get sick within four to 48 hours after eating spoiled or contaminated food, says HowStuffWorks. According to KidsHealth, food poisoning results from eating foods that contains harmful bacteria or toxins. Bacteria are found everywhere, especially in spoiled leftovers.
Sleepy and tired after eating, with food in the stomach. When food is still present in the stomach and the person overeats, overeating produces a biochemical shock on the whole organism due to factors related to heavy breathing. Falling asleep and tired after eating (usually in 20-60 minutes after eating) are frequent signs of this biochemical shock. This effect of being sleepy after eating meals is much stronger after eating junk food and especially overeating (see the second half of this page for more info about this effect).