What is Lent? Lent is an annual 40-day period of fasting, prayer, and reflection. It is observed by Catholics, Lutheran, Moravian, Anglican, United Protestant, and Orthodox Christian denominations in preparation for Easter each year. For Catholics Lent begins with Ash Wednesday and ends on Holy Saturday, the day before Easter. For Orthodox Christians so-called "Great… Read More
Author Archives: Georgi Georgiev
How Much Sleep Do You Need
The question "How much sleep do I need" as an adult is what comes to mind if you feel groggy when you wake up, feel tired throughout the day, or are generally irritable and in low mood. The question of how many hours is the right amount of sleep is even more pertinent to school-age… Read More
Posted in Health, Wellness
Tagged children, sleep, sleep duration, sleep length, sleep time, sleeping habits, teenagers
August 14, 2025
Comments closed
How Many Time Zones Are There
Contrary to a common misconception, there are more than 24 standard time zones in the World. This article covers the number of time zones in the World, the US, Canada, Russia, and Australia, how are time zones determined and why there are more than 24 of them presently in use. How many time zones are… Read More
Posted in Travel
Tagged australia, canada, international time, time, time zones, usa, world clock
August 11, 2025
Comments closed
The most EXPENSIVE songs to see live this summer
Would you pay $15 just to hear one song live? With concert ticket prices sharply rising by over 45% over the last five years, and many concerts barely cracking the 90-minute mark, concert-goers are faced with having to pay up or miss out. Experts at GigaCalculator delved into the numbers, factoring in ticket prices, stadium… Read More
Mathematics in the Kitchen
Mathematics is not only useful for solving problems and equations, but also for everyday activities such as cooking and baking. In this article, we will explore some of the ways that mathematics can help us in the kitchen, especially with the various unit conversions, measurements, ratio math and other calculations one encounters daily whether cooking… Read More
Posted in Cooking
Tagged conversions, cooking, kitchen, mathematics, recipes
May 8, 2023
Comments closed
RMR vs BMR for Weight Loss
RMR and BMR, the former abbreviated from Resting Metabolic Rate and the latter from Basal Metabolic Rate, can often be encountered in discussions related to daily caloric requirements, dieting, caloric restrictions and weight loss. Fitness amateurs and professional athletes and their physicians might also use RMR, BMR, or both for weight management. This article will… Read More
Posted in Health, Wellness
Tagged basal metabolic rate, BMR, calories, resting metabolic rate, rmr, tdee, weight loss
March 1, 2023
Comments closed
TDEE vs BMR in Daily Calorie Needs Calculation
If you set out to lose weight or maintain a target weight as an athlete or fitness or bodybuilding enthusiast, your coach or physician will often tell you that you need to estimate your BMR and TDEE and to set daily calorie intake limits based on the energy requirements calculated from these measures. Hence, it… Read More
Posted in Health, Sports, Wellness
Tagged basal metabolic rate, BMR, diet, diet and exercise, tdee, total daily energy expenditure, weight loss
February 14, 2023
Comments closed
CAGR vs IRR vs XIRR in Evaluation of Investment Returns
Investment professionals and individual investors often need to estimate the profitability of a given investment opportunity, or to retrospectively assess the results of past investments. This is typically done with the idea of comparing two or more opportunities and deciding which one to choose. Think two or more mutual funds, hedge funds, stocks, systematic investment… Read More
Posted in Finance, Money
Tagged cagr, investing, Investments, irr, net present value, npv, time value of money, xirr
February 6, 2023
Comments closed
When to Use Mean, Median, or Mode
The mean*, mode and median are the most well-known and widely used arithmetic averages. But what exactly are each used for? While all of them are measures of central tendency in a distribution of values - obtained from different kinds of measurements or observations - the question of when to use mean, median or mode… Read More
Posted in Mathematics
Tagged arithmetic average, arithmetic mean, central tendency, median, mode, statistics
December 13, 2022
Comments closed
What is a p-value in statistics
This article examines the most common statistic reported in scientific papers and used in applied statistical analyses - the p-value. The article goes through the definition illustrated with examples, discusses its utility, interpretation, and common misinterpretations of observed statistical significance and significance levels. It is structured as follows: p-value definition and meaning What does 'p'… Read More
Posted in Science
Tagged hypothesis, nhst, null hypothesis, p-value, probability, significance level, statistical significance, statistics, type I error
December 9, 2020
Comments closed
BMI for Women: Does a BMI Calculator for Women Make Sense?
There are multiple BMI calculators out there, including our own online Body Mass Index calculator. Some of them make a distinction between the sexes and produce different results for men and women. Others don't make such a distinction, including those put forth by the most respected health organizations such as the U.S. CDC, NIH, and… Read More
Posted in Health
Tagged BMI, body mass index, calculate body mass, weight loss
March 10, 2020
Comments closed
How to Punch Harder – Increase Your Punching Power Using Physics
If you are into fighting sports such as boxing, kickboxing, MMA, sanda or even a traditional martial art, you probably want to increase the punching power of your fists. When discussing how to punch harder one can hear contradictory advice for example "speed equals power" and "power is not speed". It seems much of the… Read More
Posted in Science, Sports
Tagged boxing, impact force, kinetic energy, martial arts, mma, physics, punch, punching power
March 8, 2020
Comments closed
Compound Annual Growth Rate (CAGR) – A Complete Guide
In this article we will talk about CAGR (Compound Annual Growth Rate) in detail. The formula for calculating it is presented in detail with examples. It also covers how to calculate it in Excel, how to interpret it, its utility in assessing financial assets, making predictions, and more. What does CAGR stand for? What is… Read More
Posted in Finance
Tagged annual growth, CAGR calculator, compound rates, financial forecasting, growth rate, Investments
January 27, 2020
Comments closed
What is Six Sigma Process Control and Why Most Get It Wrong (1.5 Sigma Shift)
What is Six Sigma? Six Sigma, commonly written as 6σ, is a set of techniques for process improvement originally developed for industrial manufacturing by engineer Bill Smith at Motorola in the 1980-s. A central part of the six sigma tools are procedures for statistical process control: ensuring production meets particular quality standards which result in… Read More
Posted in Business
Tagged industrial quality control, manufacturing, process control, quality control, sigma level, sigma shift, six-sigma
July 25, 2019
Comments closed
The Mathematics of Weight Loss – Putting the 3500 Calorie Myth to Rest
There is a lot of scientific work done with regards to the reduction in caloric intake required to achieve a particular weight loss goal. The mathematics behind the science of weight loss are, in fact, quite fascinating and in this article we will go over them in some detail. In doing so, we will address… Read More
Posted in Health, Wellness
Tagged calorie intake, calories, energy balance, tdee, weight loss, weight loss goals
March 28, 2019
Comments closed