Needs

Air is primarily a mixture of nitrogen and oxygen, with smaller amounts of other gases and variable amounts of water vapor. Specifically, it's approximately 78% nitrogen, 21% oxygen, and 1% other gases, including argon, carbon dioxide, and trace amounts of different gases.

People need air because it contains oxygen, which is essential for cellular respiration, the process that converts food into energy for the body to function. Without oxygen, cells cannot produce the energy they need, leading to cell damage and eventually death.

Water is composed of H2O molecules, which consist of one hydrogen molecules and two oxygen molecule.

So, how much fluid does the average, healthy adult living in a temperate climate need to drink? 

 An adequate daily fluid intake is approximately 15.5 cups (3.7 liters) of fluids per day for men and about 11.5 cups (2.7 liters) of fluids per day for women.

Humans need water because it is essential for numerous bodily functions and survival. Water serves as a lubricant for joints, helps regulate body temperature, transports nutrients, and facilitates waste removal. It's crucial for maintaining proper organ function, brain health, and overall well-being. 

According to the U.S. National Academies of Sciences, Engineering, and Medicine.

Companionship encompasses a range of relationships, including close friendships and romantic partnerships, family bonds, acquaintances, and even professional relationships at work or school.

Humans have a fundamental need for companionship, which is essential for both physical and mental well-being. Companionship, whether through friendships, family, or romantic relationships, provides emotional support, reduces stress, and combats loneliness and isolation, all of which contribute to overall health. 

Sexual expression encompasses the ways individuals manifest their sexuality through thoughts, feelings, desires, and behaviors, both internally and externally.

This includes sexual orientation, gender identity, and sexual behaviors, among other things. It's a broad spectrum of identities and experiences, including but not limited to heterosexuality, homosexuality, bisexuality, asexuality, and transgender identities and is a fundamental part of being human, influenced by biological urges, social and cultural norms, and personal experiences, It's a fundamental part of being human, influenced by biological urges, social and cultural norms, and personal experiences. 

 Sexual expression offers a range of health benefits, including stress reduction, improved mood, enhanced sleep, and potential boosts to cardiovascular and immune health. It also plays a role in building stronger relationships and increasing feelings of intimacy. There is a growing body of research, however, demonstrating that sexual expression may have health benefits for improving quality of life and self-esteem and for reducing stress, depression, and suicide.

Sexual expression is also used for Procreation. From a biological and evolutionary perspective, a fundamental purpose of sexual expression is the continuation of the species through reproduction, as well as for Pleasure and Connection. Beyond just procreation, sexual expression is a source of pleasure, enjoyment, excitement, and even ecstasy for individuals. In relationships, it can be a significant form of intimacy, communication, and bonding, according to Medium, as well as contribute to emotional well-being. Sexual expression can contribute to improved quality of life and self-esteem and can help reduce stress and depression. It can provide emotional release, relaxation, and feelings of satisfaction as well as for Social Bonding: Sexual pleasure and orgasm, and even simply engaging in sexual activity, can act as a powerful reinforcer, strengthening social bonds and attachment within relationships, according to a study published on the National Institutes of Health (NIH) | (.gov). This can be particularly important in maintaining committed relationships and cooperative parenting, according to the NIH.

People also use sexual expression as a way to Self-Discover. Exploring one's sexuality can be a journey of self-discovery and personal growth, enabling individuals better to understand their desires, preferences, and identity. 

People need sleep to allow their bodies and minds to rest, repair, and recharge. Sleep is crucial for various bodily functions, including brain function, memory consolidation, emotional regulation, and physical restoration. It also impacts immune system function, hormone regulation, and overall health, with chronic sleep deprivation increasing the risk of various diseases. 

The maximum recorded time a person has stayed awake is approximately 264 hours (11 days). While this is the longest recorded time, it's not clear how long humans can survive without sleep in general, since Sleep deficiency can interfere with work, school, driving, and social functioning. You may experience difficulty learning, focusing, and reacting. Additionally, you may struggle to gauge others' emotions and reactions accurately. Sleep deficiency can also make you feel frustrated, cranky, or worried in social situations or contribute to Mental health conditions, such as depression, anxiety, or substance misuse.