Recovery After 50: Rest and Everyday Hydration

Where Daily Water Intake Actually Comes From

Hydration targets are frequently translated into a specific number of water bottles to finish by the end of the day. Yet a substantial portion of human water intake comes from the moisture in food and other beverages.

Based on dietary recall data from 2009 to 2012, an April 2016 CDC demographic report detailed how U.S. adults met their hydration needs. The recommended adequate intake from all foods and liquids is roughly 3.7 liters for men and 2.7 liters for women. The data showed that adult men consumed an average of 3.46 liters of total water per day, and women consumed 2.75 liters. However, plain water accounted for only 30 percent of total water intake for men and 34 percent for women. The remaining 65 to 70 percent came from dietary foods and other liquids.

The report also found lower average total-water intake among adults aged 60 and over: 2.92 liters for men and 2.51 liters for women. Intake increased with reported physical activity. These are group averages from dietary-recall data, not diagnoses of dehydration or individualized fluid requirements. The report counts moisture from foods and other beverages as well as plain water, so total intake should not be confused with a plain-water drinking target.

Rest Days and Recovery for Active Older Adults

A sponsor-authored recovery article hosted by ACSM discusses how recovery routines may change with age. Its sponsorship and document type matter when weighing the recommendations below.

An industry-sponsored blog post presented by the ACSM outlines how recovery needs escalate with age, emphasizing that careful management of rest days and nutrition helps maintain long-term performance. During periods of high training volume, the sponsor's guidance recommends scheduling one to two full rest days from structured exercise per week. These days should shift away from heavy mechanical loading and focus on active recovery, such as leisurely walking, balance training, or stretching, to maintain blood flow without straining recovering tissue.

The sponsor-authored article suggests 1.0–1.2 grams of protein per kilogram of body weight per day for adults over 50, increasing up to 1.5 grams per kilogram with heavier training. It illustrates the upper amount as about 102 grams per day for a 150-pound adult. These are the article’s general recommendations, not a measured requirement for every reader over 50.

The post also discusses cold therapy and advises avoiding it immediately after strength training. Because this is an industry-presented article from a recovery-device manufacturer, these suggestions should remain attributed to the sponsor; the article is not itself formal clinical guidance or a trial proving a particular recovery intervention works.