Discover 15 modern Excel functions for 2026, including Group By and Scan, so you speed up your workflows, summaries and ...

Learn how to effectively use the SCAN function in Excel to enhance your formula-building skills. This tutorial presents four ...

Objective To evaluate systematic reviews of randomised controlled trials (RCTs) on the effects of exercise on general cognition, memory and executive function across all populations and ages. Methods ...

Sleep and hormones affect each other through your circadian rhythm, also called the sleep-wake cycle. A lack of sleep can affect several hormones at once. Getting 7 to 9 hours of sleep helps regulate ...

Plus is worth it if you often hit Free limits and want priority. Pro is for heavy users who need GPT-5.2 Pro and max quotas. Free is powerful, but all tools come with tighter caps. OpenAI introduced ...